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【单选题】
平面应力状态下若Z方向没有应力,A.
也一定没有应变；
B.
但有应变。
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【简答题】在同一正态总体中以固定 n 随机抽样,理论上有 99% 的样本均数在 范围内。
【单选题】I can't decide to choose which of them to ________. [ ]
A.
make a friend
B.
make friends
C.
make a friend with
D.
make friends with
【单选题】–Would you like me to make these calls for you? –_______. I should have made them a while ago, but I have been at meeting all day.
A.
I’d really appreciate it.
B.
Thanks. I can manage it.
C.
It’s a piece of cake.
D.
Take it easy, please.
【简答题】运行OSPF协议的DROther使用( )将LSU(链路状态更新)数据包发送给DR和BDR。
【简答题】―Which would you like, a hamburger or a sandwich? ― _____ of them is OK. I think _______ of them are delicious. A．Either, All B．Neither, both C．All, either D．Either, Both
【单选题】Mary would never do anything that was not _________ of by her parents in order not to make them unhappy.
A.
consisted
B.
allowed
C.
approved
D.
informed
【多选题】对于城市轨道车辆来说,施加制动的目的有哪些?
A.
即使列车已经停车，为避免停放的列车因重力作用或风力吹动而溜车。
B.
为了使列车在上坡道运行时更平稳和安全。
C.
为了使运行中的城轨列车能迅速地减速或停车。
D.
为了防止列车在下坡道时由于重力作用导致列车速度增加。
【单选题】If I were a teacher, I would allow my students to ____ by themselves. [ ]
A.
make a living
B.
make decisions
C.
make much noise
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