—Mr Smith, I wonder if I could take the Friday off?

—_______? It’s a bit difficult with so many people away on holiday, you know.

A．Why are you doing so　

B．Do you really have to

C．Where are you going

D．Do you feel it necessary

（）应对SSAS进行外观检查，包括天线安装情况和电源连接供电检查，并记录在船舶保安设备检查单上。

A.每月

B.每季度

C.每半年