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【单选题】
Section A Directions: In this section, you will hear three conversations. At the end of each conversation, you will hear one question. Both the conversations and the questions will be spoken only once. After you hear a question, you will choose the best answer from the four choices marked A), B), C) and D). Conversation 1 1. What does the student think about the computer lab policy?A.
He thinks the policy is complicated.
B.
It is exactly the same as the lab he went to before.
C.
It is very different from the lab he went before.
D.
It is similar to the lab he went to before.
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【简答题】液体物质的燃烧速度取决于液体的()速度。 (A)分解 (B)氧化 (C)蒸发 (D)汽化
【简答题】全面深化改革,关系党和人民事业________,关系党的________和________。
【多选题】燃烧速度取决于很多因素，下面有关的描述正确的是（）
A.
固体的燃烧速度取决于固体的升华速度
B.
气体的燃烧速度取决于气体的扩散速度
C.
液体的燃烧速度取决于液体的蒸发速度
D.
气体的燃烧速度常用火焰传播速度来衡量
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