A、 The word given in the approved examples is not controlled
B、 The word given in the approved examples is not mandatory
C、 The word given in the approved examples is not a must
答案：B
A、 The word given in the approved examples is not controlled
B、 The word given in the approved examples is not mandatory
C、 The word given in the approved examples is not a must
答案：B
A. Distances shown are based on weak wind.
B. Distances shown are developed with no wind.
C. Distances shown are on the basis of gentle wind.
A. 剪切销断裂时，确保拖杆完整。
B. 如果剪切销断裂，检查拖杆。
C. 检查拖杆对剪切销断裂的影响。
A. 测量跑道灯连接的电阻。
B. 校准跑道灯连接的电阻。
C. 复核跑道灯连接的电阻。
A. Guarantee a consistent performance of the probe.
B. Maintain an uninterrupted movement of the probe.
C. To ensure continuous movement, the probe must be kept in motion.
A. 在757上外电源由BPCU检查后再接入电网。如果外电源检查正常，断路器闭合。
B. 在757上外电源由BPCU检查后再接入电网。如果外电源检查正常，接触器关闭。
C. 在757上外电源由BPCU检查后再接入电网。如果外电源检查正常，接触器闭合。
A. 拆除校装销和设备，以阻止控制舵面的自由运动。
B. 拆除校装销，安装能够阻止控制舵面自由移动的设备。
C. 拆除能够阻止控制舵面自由移动的校装销和设备。
A. A certificated pilot who owns or operates an airplane not used as an air carrier is authorized by FAR Part 43 to perform limited preventive maintenance on his airplane.
B. A certificated pilot who owns or operates an airplane that is not airworthy can perform limited predictive maintenance on his airplane authorized by FAR Part 43.
C. A licensed pilot authorized by FAR Part 43 who owns or operates an airplane not used to operate can perform time-limited maintenance on his airplane.
A. The shock absorber is a telescopic oleo-pneumatic unit.
B. The shock absorber is a flexible hydraulic-pneumatic unit.
C. The shock strut is an elastic oil-air unit.
A. Put the actuators against the tires.
B. Put the chocks against the wheels.
C. Put the chain against the brakes.
A. Give precise instructions for using emergency exits.
B. Give special directions for using urgent exits.
C. Give accurate data for using urgent exits.
