A.80~140m,11~20s B.100~160m,11~20s C.80~140m,7~10s D.100~160m,7~10s
A.1/10 B.1/20 C.1/30 D.1/40
若不得不在流水冰群中停泊時(shí),下列正確的是:() Ⅰ應(yīng)順流進(jìn)入流冰群 Ⅱ應(yīng)頂流進(jìn)入流冰群 Ⅲ進(jìn)入流冰群后應(yīng)停車正舵 Ⅳ進(jìn)入流冰群后應(yīng)不時(shí)緩速進(jìn)車
A.Ⅰ~Ⅳ B.Ⅰ、Ⅲ C.Ⅱ、Ⅳ D.Ⅰ、Ⅳ