简要描述和说明各种新型飞行仪表的工作原理。

A.Briefly describe and explain principle of operation of any new kinds of flight instruments.

B.The working principles of various new flight gauges are easily introduced and expressed.

C.The new types of flight facilities should be described and explained shortly.

正确答案：A

Turn the valve assembly slowly in a counterclockwise direction until there is gas leakage through the boss.

Basically, writers can use the approved words in the dictionary as a core vocabulary.

Make sure that there are safety barriers around the engine exhaust area.

If the filters become clogged after an unusually short time, send them to the laboratory for analysis of the contamination.

Put the mask on and breathe through it to make sure that the oxygen supply is correct.

If you cannot install the rigging pin easily, adjust the length of the rod.

Tighten the turnbuckle until you have the correct tension in the cable.

Do not operate the brakes to decrease the pressure in the accumulators.

The tension in the cables decreases if the temperature increases.

The warning bell and the horn must start and then stop again.