When two power-driven vessels are meeting head-on and there is a risk of collision, each shall _________.(1.0)
A.stop her engines B.alter course to starboard C.sound the danger signal D.back down正确答案B
When two power-driven vessels are meeting head-on and there is a risk of collision, each shall _________.(1.0)
A.stop her engines B.alter course to starboard C.sound the danger signal D.back down正确答案B
