饭店指挥管理的一般原则为（）。A、等级链理论 B、多头指挥 C、越级指挥 D、无规定原则

根据提示写出所缺单词。

1. Where are you going this ____________? (o i n m r g n )

2. I'm going to the ____________. (b o k o r e s o t)

3. What are you going to ____________? (y u b)

4. I'm going to buy a ____________ (m i c o c) book.

5. What are you ____________ to do? (n i g o g)

Sometimes we _____ words from a sentence but the meaning of the sentence doesn't change.[ ]

A. leave for          

B. leave away        

C. leave out      

D. take out

Liu Huan is a great singer ________ long hair. [ ]

A. has

B. have

C. with

D. of

因重大误解而订立的合同，当事人一方有权( )。

A．请求人民法院撤销

B．请求人民法院确认无效

C．解除合同

D．变更合同

采用一个吊点起吊时，吊点必须选择在构件重心以下。