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【单选题】
在温度不变下，在恒压容器a与恒容容器b中，分别充入体积比为1∶3的N 2 和H 2 。若开始容器的体积相等，且在相同条件下达到平衡时，两容器中N 2 的转化率应当是A.
a中大
B.
b中大
C.
a、b中一样大
D.
无法判断
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【单选题】According to the theory of dark adaptation, before and during night flight, the pilot should
A.
Avoid the irradiation of strong light and enter the cockpit 30 minutes earlier.
B.
Enter the cockpit 5 minutes earlier and set the instrument lights to their maximum.
C.
Enter the cockpit 15 minutes earlier and set the instrument lights to their minimum
【单选题】The pilot in command of an aircraft is the person _______ the aircraft who is responsible for its operation and safety during flight.
A.
board
B.
aboard
C.
broad
D.
abroad
【单选题】The pilot in command of an aircraft is the person ______the aircraft who is ultimately responsible for its operation and safety during flight.
A.
board
B.
aboard
C.
broad
D.
abroad
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【单选题】If a flight engineer becomes incapacitated during flight, who may perform the flight engineer's duties?
A.
The second in command only.
B.
Any flight crewmember, if qualified.
C.
Either pilot, if they have a flight engineer certificate.
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