989、 Stop the test after 2 seconds.

A. 　 Stop the engine run-up practice.

B. 　 Stop the engine start procedure

C. 　 Stop the engine ignition project.

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. 　排放管使通风系统的燃油返回油箱。

B. 　将从排气系统返回油箱的燃油排出。

C. 　排放通风系统里剩余燃油返回油箱。

A. 　当反推收回时,确保飞机远离人员

B. 　当反推放出时,确保人员远离飞机

C. 　当反推运动时,确保人员远离飞机

A. 　、持续权威程序测试通常由两页组成、 一个文本页和一个图解页

A. 　检查后再次拉长连杆。

B. 　测试后再次移动连杆。

C. 　检查后再次调节连杆

A. 　 After the system is pressurized, the elevators will drop down no matter where the rigging pin is installed.

B. 　 Without the rigging pin, the elevators will go down when there is no pressure in the system.

C. 　 The rigging pin can prevent
de-energized.

A. 　To found the basis for those items, the following conceptions have been made.

A. 　双面打印除线路图和折页外的所有页。

B. 　双面打印除线路图外的所有折页。

C. 　除了折叠的线路图外,双面打印所有页面。

A. 　 This procedure is only for repairs that include a very small number of screws.

B. 　 This procedure is only for repairs that include a very small number of nuts.

C. 　 This procedure is only for repairs that include a very small number of rivets.