油机紧急停机，有危险故障时，应先切断（）A、燃油油路 B、启动电池 C、负荷开关 D、进气

阅读理解。

     I am Brad.  I like thrillers and action movies.My favorite movie star is Jackie Chan.I think Jackie Chan

is a great actor. He has a movie Who Am I. It's a very successful (成功的) action

movie. It's exciting,

     My name is Patricia. I am a girl. I like comedies and romances, but I don't like thrillers.  I think thrillers are scary. I think Beijing Opera is interesting. On weekends, I often go to see it with my father. I can learn a lot about Chinese history.

     I am Carlos.My favorite movie  star is Jet Li.I think Shaolin Temple is a great movie. I also like thrillers. I think they are very exciting.

      I'm a girl. My name is Mary. On my weekends, I often watch cartoons and science fictions (科幻电影) on TV.  I think they are interesting and funny. I don't like documentaries. They are boring.

l. Who likes thrillers?

A. Brad and Carlos.

B. Patricia and Brad.

C. Carlos and Patricia.

D. Brad and Mary.

2.What does Patricia think of Beijing Opera?

A. It's boring.B. It's interesting.

C. It's scary.D. It's sad.

3.Jet Li isfavorite movie actor______ .

A. Patricia'sB. Mary's

C. Brad'sD. Carlos'

4. Mary likes to watch______.

A. action movies and cartoons

B. comedies and documentaries

C. cartoons and science fictions

D. Beijing Opera and comedies

5.Which of the following is NOT true?

A. Brad likes Jackie Chan very much.

B. Patricia and her parents all like Beijing Opera.

C. Shaolin Temple is an action movie.

D. Mary thinks documentaries are boring.

已知函数f（x）=x³-3ax（a∈R）

（1）当a=1时，求f（x）的极小值；

（2）若直线x+y+m=0对任意的m∈R都不是曲线y=f（x）的切线，求a的取值范围；

（3）设g（x）=|f（x）|，x∈[-1，1]，求g（x）的最大值F（a）的解析式．

某温室为了保持一定的温度，每小时大约需要得到12.6×10⁶J的热量．若进入室内散热器的水温是77℃，流出散热器的水温是57℃，那么每分钟需要供给散热器多少77℃的水？[C_水=4.2×10³J/（kg•℃）]．

下列关于疏散宽度的说法错误的是（）。

A.体育馆每排不宜超过26个，前后排座椅的排距不小于0.9m时，可增加一倍，但不得超过40个

B.高层民用建筑的疏散外门、走道和楼梯的各自总宽度，应按1m/百人计算确定

C.观众厅内疏散走道的净宽度，应按每百人不小于0.6m的净宽度计算，且不应小于1.0m

D.厂房内疏散出口的最小净宽度不宜小于1.0m

下列关于己糖激酶叙述正确的是（）

A.催化反应生成6-磷酸果糖

B.使葡萄糖活化以便参加反应

C.己糖激酶又称为葡萄糖激酶

D.是酵解途径的唯一的关键酶

E.它催化的反应基本上是可逆的