单项选择题
A.Distance line B.Gantline C.Heaving line D.Tag line
What happens to the efficiency of an anchor when it is ...
单项选择题What happens to the efficiency of an anchor when it is moved from sand to mud?（）
A.The efficiency increases B.The efficiency decreases C.The efficiency remains the same D.The efficiency cannot be determined.
What form of ice is of land origin?（）A.ShugaB.FloeC.Spi...
单项选择题What form of ice is of land origin?（）
A.Shuga B.Floe C.Spicule D.Bergy bit
What does the term TO NAVIGATE WITH CAUTION mean?（）.A.T...
单项选择题What does the term TO NAVIGATE WITH CAUTION mean?（）.
A.To navigate intentionally B.To navigate intensely C.To navigate carefully D.To navigate completely
