65、Do the backup of the computer at regular intervals

A. 　授权人员必须仅操作刹车。

B. 　务必仅由授权人员操作刹车。

C. 　授权人员只能按要求操作刹车。

A. 　 Turn the drain valve counterclockwise to cause the fluid to stop flowing before the valve is pushed.

B. 　 When you turn the drain valve counterclockwise, no fluid will flow until you push the valve in.

C. 　 Make sure there is no fluid flowing after the valve is pushed, then turn the drain valve clockwise.

A. 　 lf an airplane is suspended, if would balance at the point called the center of gravity.

B. 　 The center of gravity is the point of an airplane; it would hardly balance if suspended.

C. 　 lf an airplane is hung; it wouldn't balance at the point called the center of gravity.

A. 　 Procedures shall be provided for all airplanes for all cases of engine failure, including partial failure, during takeoff and in flight.

B. 　 Procedures shall be provided for all airplanes for all cases of engine failure, including intermittent failure, during roll out and in flight.

C. 　 Procedures shall be provided for all airplanes for all cases of engine flame out, including parts failure, during takeoff and in flight

A. 　通风系统使飞机产生不同的压力从而将废气排出。

B. 　飞机利用通风系统将空气排出机外。

C. 　通风系统利用压差将空气排出飞机,

A. 　通风系统使飞机产生不同的压力从而将废气排出。

B. 　飞机利用通风系统将空气排出机外。

C. 　通风系统利用压差将空气排出飞机,

A. 　 CRES causes magnesium, aluminum, or cadmium to corrode when it touches these metals.

B. 　 Stainless steel corrodes once touching magnesium, aluminum or chromium metals.

C. 　 Magnesium, aluminum, or chromium metals shall be protected from the corrosion caused by CRES.

A. 　当火警启动时,温度增加并引起灭火器工作。

B. 　当火焰开如时,温度增加并造成触发器工作,

C. 　当起火时,温度升高并使探测器工作。

A. 　连接可以连接的导线

B. 　把断开的导线重新断开

C. 　连接断开的导线

A. 　扭力连接组件将齿轮的扭力传递到支柱上。

B. 　支撑轴产生扭转力,并将扭转力通过扭力杆组件传递到减震支柱上

C. 　扭力杆组件将扭力负载从轮轴传递到减震支柱