The pilot said he （）our vessel directly to the berth．

单项选择题The pilot motor launches are （） blue，with the PILOT in white．

A.furnished
B.painted
C.prepared
D.written

单项选择题The pilot is on board,（） ?

A.is it
B.isn't it
C.is he
D.isn't he

单项选择题The iron mike is a(n) （）.

A.pilot
B.speaker
C.standby wheel
D.automatic pilot

单项选择题The first indications a mariner will have of the approach of a warm front will be （）.

A.large cumulonimbus (thunderclouds) building up
B.high cirrus clouds gradually changing to cirrostratus and then to altostratus
C.fog caused by the warm air passing over the cooler water
D.low dark clouds accompanied by intermittent rain

单项选择题The characteristic of a lighted cardinal mark may be （）.

A.very quick flashing
B.flashing
C.fixed
D.occulting