单项选择题
Is this a()(冷藏船) ?
A.reefer B.refrigerator C.barge D.A or B
单项选择题 This is a ()(化学品船) .
单项选择题 The pilot boat takes a pilot to an/a()(远洋船).
单项选择题 The()(渡船 carries people, cargo, car or truck for short passages.