驾驶员对客舱广播应将音频选择板上的发射机选择开关置于:
A. PTT
B. VOX/IC
C. SERV
D. Pa
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Politeness can also bring dangers to people if not properly conducted.
A. TRUE
B. FALSE
使用或储存特殊贵重机器仪表、仪器等设备或物品的建筑,其耐火等级为()。
A. 一级
B. 二级
C. j级
Most acts of politeness can be responded with a friendly nod or a wave of acknowledgement
A. TRUE
B. FALSE
Nowadays it is not uncommon to find the well-mannered motorist on the road, even though there is an exception.
A. TRUE
B. FALSE