Your facsimile prognostic chart indicates that you will cross the cold front of a low pressure system in about 24 hours.You should().
A:Expect to see cirrus clouds followed by altostratus and nimbostratus clouds
B:Alter course to remain in the navigable semicircle
C:Prepare for gusty winds,thunderstorms,and a sudden wind shift
D:Expect clear weather,with steady winds and pressure,until the front passes
出自:海船船员证