氧气站空、实瓶同库存放时,应分开放置,其间距至少( )m以上。
A.1.0B.1.5C.2.0D.2.5
参考答案:B
--- What do you think of the dress?
--- Wonderful. I don’t think I can find a ________ one.
A.good
B.bad
C.better
D.worst
为了保护主机,一般港内功率为海上常用功率的()。
A.80%
B.70%
C.60%
D.50%