人员站在支架内,拧开供水阀门,观察管路是否()。
A.堵塞
B.串液
C.变形
D.破损
参考答案:D
The bargain they reached with their employers was to reduce their wage demand and accept a shorter
working week______.[ ]
A. in return
B. in all
C. in reality
D. in turn
图书馆是供人们()书籍,并进行终身学习的地方。
A、借阅
B、购买
C、租赁