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【简答题】
假定挡土墙的主动土压力Ea=70kN/m,土对挡土墙底的摩擦系数μ=0.4,δ=13。,挡土墙每延米自重G=209.22kN/m。试问,挡土墙抗稳定性安全系数Ks(即抵抗与引起的力的比值),与下列何项数值最为接近? (A)1.29 (B)1.32 (C)1.45 (D)1.56
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【判断题】The word “day” would be pronounced as /daɪ/ in Singaporean English.
A.
正确
B.
错误
【单选题】一旦数名武装海盗已经上船,船员 ____ 。①不要直接与持枪海盗抗衡;②应迅速撤离甲板进入生括区;③封闭所有通道,④尽量拖延时间,以待外部的可能救援。
A.
①~③
B.
①~④
C.
②~③
【单选题】变速器设置倒档的目的是 。
A.
换挡
B.
实现倒车
C.
变速
D.
中断传动
【简答题】巴洛克教堂的三大特征是什么?
【判断题】我国第二代功能食品不仅要经过动物和人体实验证明有某种生理功能,还需要确知具有该功能的因子的化学结构。
A.
正确
B.
错误
【单选题】Replace the underlined part with another word or phrase without changing the basic meaning of the sentence . On the first day of class, after explaining what the course would be like, the professor ad...
A.
persuaded
B.
advised
C.
encouraged
D.
suggested
【判断题】碳14的半衰期大约是6000年。
A.
正确
B.
错误
【判断题】碳14的半衰期大约是6000年。
A.
正确
B.
错误
【单选题】Choose the suitable definition for the underlined word in each sentence. There’s just a faint chance that the weather will improve by tomorrow. I would rather wait until a nice day.
A.
difficult to see, hear, smell, etc.
B.
(of possibility) very small or slight
【单选题】He made a promise that he would ________ us with dinner the next day, but he broke his word. [     ]
A.
give
B.
offer
C.
entertain
D.
equip
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