青霉素族的母核结构部分 A．费休法 B．铂电极 C．汞-硫酸亚汞电极 D．萘 E．青

高血压病Ⅲ级眼底表现（）。

A.眼底正常

B.视 * * 水肿

C.眼底渗出、出血

D.眼底动脉痉挛变细

E.眼底动脉呈银丝样，有动静脉交叉压迫现象

开关柜柜间接缝应＜（）。

句型转换，每空一词。

1. My little brother sleeps nine hours every day. (划线提问)

    How ________ hours ________ your little brother sleep every?

2. I think this is a good way to keep healthy. (改为否定句)

     I ________ think this ________ a good way to keep healthy.

3. The girls get to school by subway. (同义句)

    The girls ________ the ________ to school.

4. Jane is taller than any other girl in her class. (同义句)

    Jane is ________ ________ girl in her class.

5. Mr. Li often goes to Shanghai. (用tomorrow改写句子) 　

    Mr. Li ________ ________ to Shanghai tomorrow.

读装配图的目的不包括了解( )。

A．零件之间的拆装关系

B．各零件的传动路线

C．技术要求

D．所有零件的尺寸

客户询问如在保单宽限期内未及时缴纳保险费，则( )。

A．合同完全有效

B．合同部分有效

C．合同完全失效

D．合同效力中止