An all-round flashing yellow light may be exhibited by a(n)（）.<br>A:vessel not under command<br>B:air cushion vessel in the nondisplacement mode<br>C:vessel towing a submerged object<br>D:vessel engaged in diving operations

An all-round flashing yellow light may be exhibited by a(n)（）.
A:vessel not under command
B:air cushion vessel in the nondisplacement mode
C:vessel towing a submerged object
D:vessel engaged in diving operations

出自：海船船员证

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