单项选择题
A vessel proceeding along the bank of a river or channel has the tendency to（）.
A.continue in line with the bank B.hug the bank C.sheer away from the bank D.increase speed
单项选择题 A vessel proceeding along a narrow channel shall（）.
单项选择题 A vessel is proceeding downstream in a narrow channel on the Western Rivers when another vessel is sighted moving upstream. Which vessel has the right of way? （）
单项选择题 A tug’s horsepower available at the shaft is（）.
