Instead of you ___ on me. I should wait on you.
A.wait
B.waited
C.waiting
D.be waited
答案:C
In October, the price of the________to Mount Tai has risen by 50 yuan.[ ]
A. permission
B. admission
C. introduction
D. instruction
阀门解体步骤不含()。
A、卸下填料压盖
B、拆下阀门
C、旋出阀杆
D、拆下传动装置