【填空题】
46. 以弯曲变形为主要变形的杆件称___ 。
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硅酸盐水泥石在温度为250℃时，水化物开始脱水，水泥石强度下降，因此硅酸盐水泥不宜单独用于___
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B. 耐热混凝土工程
C. 高强混凝土工程
D. 路面与地面工程
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配合比正常的普通混凝土受压时，最可能发生的破坏形式是 ___
A. 骨料先发生破坏
B. 水泥石先发生破坏
C. 水泥石与粗骨料的结合面先发生破坏
D. 骨料与水泥石同时发生破坏
【单选题】
单位用水量在水灰比和水泥用量不变的情况下，能够反映 ___
A. 水泥浆量与骨料用量之间的比例关系
B. 水泥与骨料用量的比例关系
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D. 细骨料和粗骨料用量之间的关系
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( ) 26. Where does the writer of "The little Prince" come from?
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( ) 27. What does the prince do after the fox tells him a secret?
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( ) 34. Judy Foreman copied down the phrase because she ___ .
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( ) 36. What can we infer from the last paragraph?
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( ) 37.The greatest river for navigation is ___________.
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D. D
【单选题】
( ) 39. The water in the river is polluted because of _____________.
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A. A
B. B
C. C
D. D
【单选题】
( ) 40. The best title of the passage is ___________.
A. Rivers in Cities B. The importance of Rivers
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