A、 A maximum distance of 50 feet is required between consumable materials and the work area.
B、 Keep flammable materials at a minimum distance of 50 feet from the work area.
C、 Explosive materials must be kept at least 50 feet away from the work area.
答案：B
A、 A maximum distance of 50 feet is required between consumable materials and the work area.
B、 Keep flammable materials at a minimum distance of 50 feet from the work area.
C、 Explosive materials must be kept at least 50 feet away from the work area.
答案：B
A. 两个半圆形的挡板控制空气流
B. 两个半圆形的金属圈控制空气流
C. 两个半圆形的金属圈控制空气流
A. 不正确调整升降舵脚蹬上的止动螺栓可能导致损坏。
B. 不正确调整方向舵踏板的止动螺栓可能导致损坏。
C. 不正确调整方向舵脚蹬上的止动螺栓可能导致损伤。
A. Increase the pressure until the flow starts again.
B. Add the pressure until the flow starts again.
C. Increase the pressure until the stream starts again.
A. This system does not exceed the normal channels of communication for items not included in the CAP.
B. For items not included in the CAP, this system does not take the place of the normal channels of communication.
C. For items not mentioned in the CAP, his system does not occupy the normal channels of communication.
A. List the part numbers in numbers
B. Make a list of the part in digital numbers
C. Make a list of the part numbers in numerical sequence
A. When you change a word with the alternative, you must ensure that the meaning of the sentence varies.
B. The meaning of the sentence can be different when you use the alternative you select to replace a word.
C. Always keep the same meaning of the sentence when you use the alternative to replace a word.
A. Use back thrust to change the director of the exhaust to achieve contrary thrust.
B. Thrust reverser is used to change the direction to the exhaust gases for reverse thrust.
C. To change the direction of the exhaust nozzle, the thrust reverser is used to obtain the opposite thrust.
A. 在作动控制之前请不要连接锁定机构。
B. 在操作控制杆之前请断开锁销。
C. 在移动控制杆之前请解锁权。
A. Two systems can be energized at a time.
B. Two systems can be engaged at the same time.
C. Two systems can be adopted separately.
A. When taking off from the runway, deviation pointers in the ADF indicators show the pilot in which direction he/she must control the airplane.
B. During the approach to the runway, deviation pointers in the course indicators show the pilot in which direction the aircraft must go.
C. In the approaching process, deviation pointers in the flight path deviation indicator show the pilot how to control the aircraft.
