A.接头处
B.拐弯点
C.预留长度处
D.中间处
E.四孔
第1题
第3题
第4题
A.0.80c
B.0.976c
C.0.994c
D.1.60c
第5题
第6题
A vessel not under command shall display ______.
A.two red lights at night and two black balls during daylight
B.two red lights at night and three black balls during daylight
C.three red lights at night and two black balls during daylight
D.three red lights at night and three black balls during daylight
第7题
A.6m
B.10m
C.12.5m
D.14m
第8题
A.the entire range of wavelengths of electromagnetic radiation
B.used to classify something in terms of its position on a scale between two extreme or opposite points
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