661. If the pressure supply stops, cancel the test

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. Keep the length of the drill bit at 45 mm maximum.

B. Use a drill bit so that its length does not become longer than 45 mm.

C. A drill bit can only be used if its length does not exceed 45 mm.

A. Do the tightening procedure.

B. Do the loosening procedure.

C. Do the strengthening procedure.

A. 对备用排气风扇插钉进行完整性检查。

B. 对备用进气风扇插头进行连续性检查。

C. 对备用排气风扇插座进行连续性检查。

A. Soak the element for two hours.

B. Wet the element for two hours.

C. Stove the element for two hours.

A. Different meanings occur when words are combined in different ways.

B. When words can link up in different ways, ambiguity occurs.

C. Misunderstanding happens when words are contained in different modes.

A. Apply a small quantity of oil to the threads of the two bolts.

B. Lubricate the threads with a small quantity of oil.

C. Lubricate the two bolts with oil.

A. smear the sealing compound.

B. play the sealing compound.

C. apply the sealing compound.

A. 相关警戒灯必须在30秒后熄灭。

B. 故障的警告灯必须在30秒后关闭。

C. 相关警告灯会在30秒后熄灭。

A. 座椅锁定高度装置控制了座椅高度。

B. 座椅长度锁装置控制座椅长度。

C. 座椅高度锁机械装置控制座椅高度。