单项选择题

进入反应器之纯氢气量与原料量之体积比称为()。

A.空速
B.氢油比
C.油氢比
D.都不对

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热门 试题

单项选择题
“中国的海域处在中、低纬度地带,自然环境和资源条件比较优越。”最佳译文是()

A.Located in medium and low latitudes, China's sea areas have advantageous natural environmental and resource conditions
B.China's sea areas locate in medium and low latitudes; there are advantageous natural environmental and resource conditions.
C.Located in medium and low latitudes, China's sea areas are full of advantageous natural envi-ronmental and resource conditions.

单项选择题
“她不很爱说话,别人问了才回答,答的也不多。”最佳译文是()

A.She said little, only answering briefly when others asked her question.
B.She said little, when others asked her a question, she only answered briefly.
C.She said little, only answering briefly when asked a question.

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