IEEE 802.11使用的传输技术为( )。A．红外、跳频扩频与蓝牙 B．跳频扩

《药品生产监督管理办法》规定，《药品生产许可证》所载明的项目中，应由(食品)药品监督管理部门核准的许可事项为()

A．企业名称、法定代表人、企业负责人

B．企业负责人、生产范围、生产地址

C．企业名称、企业类型、注册地址

D．企业类型、生产范围、法定代表人

E．生产地址、注册地址、企业名称

用括号内所给动词的适当形式填空。

1. —Did Tom enjoy seeing his old friends yesterday ?

    —Yes, he did. He _______ ( not meet ) his old friends for a long time.

2. The detective promised to the victim that he               (catch) the robber as soon as possible.

3. —Do you know the places of interest in Wuxi ? 

    —Yes, it is the second time I _______ (visit ) the beautiful city.

4. He seemed to have difficulty _______ (control) his actions.

5. Would you please _______ (not disturb) him when he is reading English.

6. While I was watching a football match on TV, my twin brother _______ (pack) for the next day's trip

    to Qingdao.

7. The sports meeting they were looking forward to _______ ( hold) yesterday.

8. When you laugh or smile, your body _______ (relax).

对于正常压力的高渗透性砂岩，往往地层漏失压力比（）小得多。

A、地层坍塌压力

B、地层压力

C、地层破裂压力

D、实际允许最大关井套压

在固定总价合同形式下，承包人承担的风险是( )。

A．工程变更的风险，不包括工程量和通货膨胀的风险
B．全部工程量和通货膨胀的风险
C．全部工程量的风险，不包括通货膨胀的风险
D．通货膨胀的风险，不包括工程量的风险

用带齿的挫刀对工件表面进行切削加工称为（）。

A、锯削

B、锉削

C、磨削

D、錾切