单选题安全航速是指()。 ①能采取适当而有效的避碰行动; ②能在适合当时环境和情况的距离以内把船停住A①B②C①②都对D①②都不对
单选题
安全航速是指()。 ①能采取适当而有效的避碰行动; ②能在适合当时环境和情况的距离以内把船停住
A
①
B
②
C
①②都对
D
①②都不对
参考解析
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