Great efforts to increase agricultural p

题型:选择题

问题:

Great efforts to increase agricultural production must be made if food shortage _____ avoided.

A.is to be

B.can be

C.has been

D.will be

考点:一般现在时将来进行时过去完成进行时过去将来时的被动语态
题型:选择题

线路锁定后,应立即按下列()要求整正轨道,并开始观察钢轨位移情况。

A.捣固道床

B.夯拍整理道床,使断面符合设计要求

C.检查扣件

D.钢轨位移观察记录应列入竣工资料

E.起道时,着力点应离开焊缝

题型:选择题
补全对话(选择正确答案的序号填入横线上)。
A: 1 _________________.
B: Why do you like to see pandas?
A: 2 __________________.
B: 3 _________________?
A: I like to see elephants,too. Because they can dance.
B: Really? 4_________________. By the way, do you want to be an assistant in the zoo?
A: Well,to work for animals is interesting, but kind of dangerous. I don't 1ike it.
B: 5_________________?
A:  I want to be a reporter. I can meet many famous(著名的)people.
A: What other animals do you want to see
B: What do you want to be.
C: Let's go to see the pandas
D: That sounds interesting.
E: Because they are beautiful, but kind of shy
题型:选择题

20世纪最富影响力的科学工程不包括()

A、曼哈顿工程

B、阿波罗工程

C、人类基因组工程

D、哈勃望远镜工程

题型:选择题

海上运输中,关于保险、赔偿做了哪些规定?

题型:选择题

离心泵输送粘性液体时,当液体黏度超过()时,泵的流量,压头,效率均会发生较大变化

A.50mm/s

B.25mm/s

C.15mm/s

D.5mm/s

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