(单选题)
我们每航次拆卸一次吊杆。()
AWe dismantle the jumbo boom twice a voyage.
BWe dismantle the derricks once a voyage.
CWe examine the derricks once a voyage.
DWe dismantle the heavy derricks once a voyage.
正确答案
答案解析
略
AWe dismantle the jumbo boom twice a voyage.
BWe dismantle the derricks once a voyage.
CWe examine the derricks once a voyage.
DWe dismantle the heavy derricks once a voyage.