货船常采用()舵。
A.平板舵
B.双支点平衡舵
C.半悬挂式平衡舵
D.B或C
参考答案:D
As a child , he could sing a lot of nursery_____. [ ]
A. rhyming
B. rhymes
C. rhythm
D. thyme
慢性肾衰竭病人需严格记录出入液量是因为病人有
A.脱水
B.水肿
C.脱水或水肿
D.低钾血症
E.低钠血症