When the selector is in the 100% position, the user will（ ） pure oxygen.

单选题

When the selector is in the 100% position, the user will（ ） pure oxygen.

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单选题

Routine inspection of the gyro compass does NOT include ____ .A. shifting the mode selector switch on the switch panel of the power source unit to OFF when it is not in useB. checking the repeaters with the master compassC. checking the compass by azimuth observation when possibleD. making sure that the power supply voltage is constantly maintained

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单选题

A radio transmitter is activated when the _______ ．

答案解析

单选题

Except when the Handbook producer is restricted in choice or otherwise limited, the choice is his.

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单选题

When you install the part, make sure that the rounded edge is against the structure.

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