船舶在港时间最短的作业排序原理以()为基础。
A.优先取长规则
B.优先取短规则
C.系统安排规则
D.省时省力规则
参考答案:B
"Our physics teacher asked a difficult question, but we all could find the answer."
The underlined word has the same meaning as the one in _______. [ ]
A. work out
B. catch up with
C. look out
D. come up with
产褥期抑郁症预后不良,再次妊娠不复发。