A、The persence of cirrus clouds
B、The low-hanging stratus clouds
C、The altocumulus clouds
D、The massive cumulus clouds
更多“（）may be a warning for an approaching storm.”相关的问题
A、A.Navigational warnings B、B.Weather warnings C、C.SAR and distress alert information D、D.All of the above
A、It cannot be used in all parts of the world B、There are 12 functioning GPS satellites at present C、It may be suspended without warning D、Two position lines are used to give a 2D fix
A、A.the bridge watch-keeper B、B.the captain C、C.the chief engineer D、D.the engine room staff
A、that a distress message will follow B、a request for assistance in searching for a man overboard C、an urgent warning about a cyclone D、All of the above
A、Notices to Mariners B、Sailing Directions C、List of Lights and Signals D、Guide to Port Entries
A、cylinder compression pressure may not be high enough B、cylinder compression temperature may be too high C、fuel oil injection pressure may not be high enough D、scavenge and purge process is incomplete
A、A.Toxic gasses may be present B、B.Flammable gasses may be present C、C.Liquid muds may flood adjoining spaces D、D.An oxygen-deficient atmosphere may be present
A、may always be complete and up-to-date B、may not always be complete and up-to-date C、may sometimes be complete and up-to-date D、may not sometimes be complete and up-to-date
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