A、 It is still a mystery what caused the accident.
B、 It is still a mystery that caused the accident.
C、 It is still a mystery in which caused the accident.
答案：A
A、 It is still a mystery what caused the accident.
B、 It is still a mystery that caused the accident.
C、 It is still a mystery in which caused the accident.
答案：A
A. 这此ALIs是强制性的,未经负责飞机型号证书的FAA办公室或适用的监管机构的批准,不能更改或删除。
B. 这些ALIs是指令性的,未经FAA办公室批准不得更改或删除。FAA办公室负责飞机型号证书或发布适用的管理规章。
C. 这些ALIs是非常必要的任何更改或删除必须获得FAA办公室批准,或者其他可以颁发飞机型号证书的监管机构的批准。
A. 一般而言,当手册中小部分页数受到影响时,受影响部分应准备修订。
B. 一般而言,当手册中有小部分内容受到影响时,应准备修订。
C. 一般而言,当手册的总页数中有一小部分受到影响时,应准备修订。
A. 重量必须均匀分布在安定面跨度上。
B. 重量必须分别分布在安定面隔框上。
C. 重量必须平衡地分布在安定面翼尖上。
A. A lever controls the valve position.
B. A lever controls the valve open and close.
C. A stick rotates the valve position.
A. Water in fuel is dangerous.
B. The incidence of water in fuel is dangerous.
C. It is very dangerous to have water in fuel.
A. 为卫生间和厨房提供冷气。
B. 为卫生间和厨房提供暖气。
C. 为卫生间和厨房提供通风。
A. TURN THE COVER UNTIL YOU CAN GET ACCESS TO THE JACKS THAT HAVE + AND - MARKS.
B. SWIVEL THE COVER UNTIL YOU CAN GET ACCESS TO THE JACKS THAT HAVE + AND - MARKS.
C. ROTATE THE COVER UNTIL YOU CAN GET ACCESS TO THE JACKS THAT HAVE + AND - MARKS.
A. When autopilot is disconnected, it also turns off the A/P red flashing warning light on the ASAs.
B. The driving is disconnected, the warning module issues an alarm and the A/P light flashes at the same time.
C. When autopilot is disconnected, the warning module issues an alarm and the A/P light flashes.
A. 要安装燃油温度指示器,将其向后翻转。
B. 要安装燃油温度指示器,扭转其朝向后方。
C. 要安装燃油温度指示器,将其向后倾斜。
A. 扩孔(铰孔)至直径达到8.00±0.003毫米
B. 钻孔至半径达到8.00±0.003毫米
C. 钻孔至直径达到8.00±0.003微米
