单选题Which statement is TRUE concerning radiotelephones on board towing vessels?（）AThere cannot be a radiotelephone located anywhere except in the wheelhouseBThe officer in charge of the wheelhouse is considered to have the radiotelephone watchCOnly distress messages may be transmitted over channel 13DOnly the Master of the vessel is allowed to speak over the radiotelephone
单选题
Which statement is TRUE concerning radiotelephones on board towing vessels?（）
A
There cannot be a radiotelephone located anywhere except in the wheelhouse
B
The officer in charge of the wheelhouse is considered to have the radiotelephone watch
C
Only distress messages may be transmitted over channel 13
D
Only the Master of the vessel is allowed to speak over the radiotelephone
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