42、The staff should give the( ) a manual search.

A. 　X射线机屏幕

B. 　X射线源

C. 　X射线机操作员

D. 　铅防护

A. 　静止

B. 　倒计时

C. 　危险

D. 　以上都不是

A. 正确

B. 错误

A. 　弹头

B. 　弹壳

C. 　底火

D. 　发射药

A. 　 Please go there to go through the security control.

B. 　 I’m sorry to tell you that your flight has been delayed owing to mechanical difficulties.

C. 　 Because it is a domestic flight.

D. 　 Because you have some forbidden articles with you.

A. 　 将已检查的托运行李实行封包或加贴封条

B. 　 实施有效监控

C. 　 移交公安机关

D. 　 防止验讫的行李被夹塞物品或与未经检查的行李相混

A. 　传送带电机过热

B. 　行李和行李之间的距离太短

C. 　X射线机显示器图像受到干扰

D. 　X射线机在无行李检查时一直发射X射线

A. 　紫色

B. 　红色

C. 　黄色

D. 　绿色

A. 　军用枪

B. 　民用枪

C. 　军械

D. 　警械

A. 正确

B. 错误