179.Documents should be readily revisable.

A. When there are too many positive or subtractive pressure in the fuel tanks,the pressure relief valve eliminates damage to the wing structure.

B. When there is too much plus or minus pressure in the fuel tanks,the pressure relief valve previews damage to the wing structure.

C. The pressure relief valve prevents damage to the wing structure when there is too much positive or negative pressure in the fuel tanks.

A. Each surge tank has a vent scoop and pressure relief valve on its access door.

B. The vent scoop and pressure relief valve each has an access door in the surge tank.

C. The surge tank has a vent scoop and pressure relief valve on each access door.

A. 逆时针转动调节器 60 度。

B. 逆时针旋转调节器时应当增加 60 度。

C. 逆时针旋转调节器,每次增量 60 度。

A. Check the cut for gaps that start at its corners.

B. Examine the opening for cracks that start at its corners.

C. Inspect the clearance of gate from the corner.

A. The radius of the duct is too small.

B. The diameter of the tube is too small.

C. The circumference of the pipe is too small.

A. The responsibility of ABC is not to modify the airplanes that belong to STC.

B. It is not STC's responsibility to modify ABC's aircraft.

C. ABC is not in charge of the aircraft modified by STC.

D. C.ABC is not in charge of the aircraft modified by STC.

A. Review the failures report from the logbook and related fault messages with center DU or CDU,debrief the flight crew for faults and report them for handling.

B. Either the logbook or center DU/CDU shall be checked for faults records and related fault information,then review the faults reported by the flight crew and take actions.

C. Consult the failures report from the logbook to find the related information on center DU or CDU,listen to the crew for faults report.Report faults and handle them.

A. 将要测试的这个系统在上个航段运转不正常。

B. 该系统要测试上一航段的不正常运行。

C. 在上一航段里该系统被测试为运行不正常。

A. IAS shall be monitored continuously until the end of the test.

B. Monitor the speed indication as long as the test continues.

C. Monitor the speed indication continuously until the end of the test.

A. If the Halon extinguisher has its lever lock pin lost,you must scale the extinguisher to make sure if it is full.

B. If the hand lock pin on the Halon fire flask is not there,you must weight the extinguisher to see if it is full.

C. If the handle lock pin on the Halon extinguisher is not there,you must weigh the extinguisher to find if it is full.