【判断题】
变压器工作时,高压绕组的电流强度总是比低压绕组的电流强度大
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当35KV变压器温度升到110。C以上时,风机应能自动开启。当温度降到80。C以下时,风机应能自动关闭
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牵引站对触网采用双边供电方式是为了提高供电可靠性,减少迷流的产生
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主变发生变压器差保护动动作,导致一段母线失压,由于该失压是因故障保护动作跳闸引起,所以对应的分段开关不会启动自切合闸
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框架保护是针对列车安全运行而设置的一种保护
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金属氧化物避雷器由火花间隙和并联电阻串联而成
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新安装的蓄电池注完电解液而未充电前,没有化学反应,电动势为零
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在10~25℃范围内,温度越高,铅酸蓄电池的容量越低
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蓄电池在充电时有可燃气体逸出,所以电池室内严禁吸烟
【判断题】
直流屏控制母线输出是变电站电力系统的直流工作电源
【单选题】
硫化氢旗按国际3#旗的规格制作(国际3#旗的规格为:1400mm×900mm),旗上有“H2S”字样,“H2S”字样应布满在( )面积上。___
A. 900mm×650mm
B. 900mm×700mm
C. 1000mm×650mm
D. 800mm×650mm
【单选题】
风向标应用( )相间的布制作,风向标应安装在人员易见的地方。 ___
【单选题】
听到消防警报后,全船人员按《平台应急部署表》编队到各自指定的地点集合,并在( )分钟之内集合完毕。___
A. 1分钟
B. 2分钟
C. 3分钟
D. 4分钟
【单选题】
当硫化氢在空气中的浓度达到20PPM时,所有在危险区域工作的人员必须戴上( )。___
A. 自给式呼吸器
B. 口罩
C. 气体探测仪
D. 安全帽
【单选题】
当硫化氢在空气中的浓度达到10PPM时,工作人员戴上自给式呼吸器,不戴呼吸器工作时间不得超过( )小时。___
【单选题】
( )对正压自给式空气呼吸器进行一次检查.保养并填写检查记录。___
A. 每月
B. 每口井开钻前
C. 每季度
D. 每年
【单选题】
大钳牙板齿磨去原齿高的( ),应更换新牙板。___
A. 1/4
B. 1/5
C. 1/6
D. 1/7
【单选题】
在用大钳每( )必须探伤检查一次,并记录建档。___
【单选题】
卡瓦装配后试验,至少有( )%的卡瓦牙能接触钻具。___
【单选题】
钻杆立柱通常由三根单根组成,每根立柱大约长( )。___
A. 20米
B. 25米
C. 29米
D. 35米
【单选题】
所有钻杆都是由( )制造。___
A. 对焊钢管
B. 无缝钢管
C. 接焊钢管
D. 普通钢管
【单选题】
钻杆接头之间,主要是靠( )密封。___
A. 台肩
B. 螺纹
C. 钻杆本体
D. 丝扣油
【单选题】
钻杆接头类型中REG表示( )。___
【单选题】
NO.1补心能座放外径( )的管柱。___
A. 11-3/4"~ 13-3/8"
B. 10-3/4"~ 9-5/8"
C. 8-5/8"~ 2-3/8"
D. 2-3/8"~ 13-3/8"
【单选题】
NO.2补心能座放外径( )的管柱。___
A. 11-3/4"~ 13-3/8"
B. 10-3/4"~ 9-5/8"
C. 8-5/8"~ 2-3/8"
D. 2-3/8"~ 13-3/8"
【单选题】
NO.3补心能座放外径( )的管柱。 ___
A. 11-3/4"~ 13-3/8"
B. 10-3/4"~ 9-5/8"
C. 8-5/8"~ 2-3/8"
D. 2-3/8"~ 13-3/8"
【单选题】
18°锥面的吊卡的锥度不得小于( )。 ___
A. 10°
B. 12°
C. 15°
D. 16°
【单选题】
在用吊卡每( )必须探伤检查一次,并记录建档。___
【单选题】
常用的吊环提升载荷为( )吨。___
A. 350和500
B. 350和600
C. 250和500
D. 250和600
【单选题】
常用的钻铤提升器负荷为( )吨。 ___
A. 100
B. 120
C. 150
D. 180
【单选题】
SH350型吊环中350表示( )。___
A. 提升载荷
B. 额定载荷
C. 序列号
D. 无意义
【单选题】
吊环在处理事故或者强力上提后要( )。 ___
A. 继续使用
B. 探伤检查
C. 报废处理
D. 焊接加固
【单选题】
吊环在损伤之后要( )。 ___
A. 报废
B. 继续使用
C. 降级使用
D. 焊接修复
【单选题】
( )用于吊索直接诶系结杆件起吊,且可自动勒紧,并容易解开绳子。___
A. 瓶口结
B. 桅杆结
C. 水手结
D. 挂钩结
【单选题】
拖航固定时,大件的活动物品最好用( )固定。 ___
【单选题】
平台正常作业时的气隙高度是指:( )。___
A. 水面到海底的高度
B. 天车到转盘的高度
C. 转盘到海底的高度
D. 转盘到海面的高度
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【单选题】
Aeronautical chart is divided into two categories,______. ___
A. Aeronautical map and special type of aeronautical chart
B. En-route chart and approach chart
C. Area chart and standard instrument arrival and departure chart
D. Aerodrome chart and area chart
【单选题】
Aircraft are required to comply with ATC instructions within______.___
A. advisory airspace
B. domestic airspace
C. controlled airspace
D. international airspace
【单选题】
Amendments to the initial clearance will be issued at anytime an air traffic controller deems such action necessary to______.___
A. avoid possible confliction between aircraft
B. correct the previously issued clearance
C. cancel the flight plan
D. expedite the traffic
【单选题】
研究表明,当耳机话筒的位置距离嘴( )英寸且稍微偏下时,传输的声音质量最佳。(注:1英寸=2.54CM)___
A. 0.25-0.5
B. 0.75-1
C. 1.25-1.5
D. 1.75-2
【单选题】
“I want to divert to shanghai” is equal to______.___
A. I want to our destination Shanghai
B. I want to overfly Shanghai
C. I want to alternate to land at Shanghai
D. I want to call Shanghai control
【单选题】
When an aircraft is being subjected to unlawful interference, the pilot should try to notify _______ of this fact.___
A. the appropriate ATC units
B. company
C. the passengers on board
D. air attendants
【单选题】
When pilot say“Did you pick it upon your screen?”,that means______.___
A. did you pick up your screen?
B. did you see it on your screen?
C. did your screen pick me up?
D. did you change your radar?
【单选题】
ATC clearance does not contain______.___
A. clearance limit
B. altitude data
C. route of flight
D. flight direction
【单选题】
When pilot sets an altimeter setting to a QNH,that will indicate_________
A. flight level
B. altitude
C. height
D. safety level
【单选题】
When pilots set a pressure of 29.92 in mercury to indicate_________
A. altitude
B. height
C. flight level
D. safety level
【单选题】
管制员还应当对管制指令当中的不同内容进行适当的排序,相对重要的内容应当排列在管制指令的 ( )位置___
A. 前面
B. 中间
C. 尾部
D. 以上都可以
【单选题】
When Beijing time is 0801,Zulu time should be______.___
A. 2001
B. 1
C. 601
D. 1601
【单选题】
Emergency frequency is______.___
A. 121.5MHZ
B. 120.5MHZ
C. 121MHZ
D. 119.0MHZ
【单选题】
“PAN” is the international RTF______signal___
A. emergency
B. distress
C. urgency
D. dangerous
【单选题】
“MAYDAY” is the international RTF______signal.___
A. emergency
B. distress
C. urgency
D. dangerous
【单选题】
According to ICAO definition, a condition concerning the safety of an aircraft or other vehicle or of some person on board or within sight but which does not require immediate assistance is _______ .___
A. urgency
B. dangerous
C. emergency
D. distress
【单选题】
Which SSR Code is not right?___
A. 7020
B. 8025
C. 6060
D. 4021
【单选题】
______is the accepted standard for worldwide time signal broadcast used for aviation.___
A. GMT
B. LT
C. UTC
D. SST
【单选题】
_____means the level is measured in 1013.2 pha___
A. Level
B. Height
C. Altitude
D. Flight level
【单选题】
An aircraft known or believed to be in a state of emergency should be given______over other aircraft.___
A. way
B. flight plan
C. instruction
D. priority
【单选题】
管制话筒正确使用方法是:___
A. PTT发射键还没有完全按下时就开始发指令
B. 指令还没有结束就松开PTT发射键
C. 按PTT发射键与发话同时进行,松开PTT发射键与发话同时进行
D. 先按下话筒PTT发射键,然后再开始对空发话,发话完毕后再松开话筒PTT发射键
【单选题】
SSR code is a______digital number.___
A. two
B. six
C. one
D. four
【单选题】
Traffic information should include_________
A. direction of aircraft concerned
B. weather
C. speed of aircraft
D. heading of aircraft
【单选题】
根据区管中心业务通告,管制员通知机组转换频率的管制指令应当与其他管制指令( )。___
【单选题】
20NM is equal to.___
A. 40km
B. 38km
C. 37km
D. 41km
【单选题】
The altimeter setting used in en-route flight should be______hpa___
A. 1019
B. 1013
C. 2992
D. 1000
【单选题】
Larger separations than the specified minima should be applied whenever in.___
A. turbulence
B. bad weather
C. a raining day
D. highlevel
【单选题】
_______is air traffic control service for controlled flights in control areas___
A. Route service
B. En-route fly service
C. Area control service
D. Deviation control service
【单选题】
_______ is a service provided to notify appropriate organizations regarding aircraft in need of search and rescue aid, and assist such organizations as required.___
A. alerting service
B. information service
C. rescue service
D. assistance service
【单选题】
Visibility is the ability as determined by atmospheric conditions and expressed in unit______.___
A. meters
B. feet
C. distance
D. odometer
【单选题】
SIGMET is a weather advisory issued concerning weather______to the safety of all aircraft.___
A. significant
B. changeable
C. information
D. condition
【单选题】
Flight level is a______of constant atmospheric pressure which is related to a specific pressure datum 1013.2hpa.___
A. standard
B. surface
C. height
D. number
【单选题】
Air traffic means all aircraft in flight or operating on the______of an aerodrome.___
A. highway
B. hanger
C. maneuvering area
D. terminal
【单选题】
The true airspeed is the airspeed of an aircraft relative to______air.___
A. turbulence
B. smooth
C. undisturbed
D. the
【单选题】
Air speed is the speed of an aircraft relative to its surrounding______.___
A. traffic
B. airmass
C. clouds
D. wind
【单选题】
“Aircraft” means any machine that can derive support in the______from there actions of the air other than there actions of the air against the earth's surface.___
A. atmosphere
B. water
C. sea
D. lake
【单选题】
If the radar receiver detects the retarding time tR=500mS between transmitting pulse and receiving pulse,now the target is______km from the radar station.___
A. 150
B. 120
C. 100
D. 75
【单选题】
“Advise______”means“ Tell me what you plan to do”.___
A. wanting
B. intentions
C. ideas
D. command
【单选题】
The recommendation is advisory in nature.The decision as to whether the flight can be conducted safely rests solely with the______.___
A. controller
B. manager
C. pilot
D. passengers
【单选题】
“There are broken______along the entire route between niner and one one thousand feet at the present time.”___
A. radial
B. clouds
C. weather
D. way