下列氧化还原反应中，水既不作氧化剂、又不作还原剂的是（ ） A．CO+H2O高温

早期介入与前期物业管理的不同之处在于()。

A.阶段不同

B.内容作用不同

C.环境不同

D.服务的对象不同

阅读理解。

     I have an American friend. Her name is Lily. This is a picture of her new school. Look! There are six

 floors (层) in the teaching building. There are fifteen classrooms on every floor. In the school, there are

 3,200 students and 300 teachers. The teachers' offices are behind the classrooms. The dining hall is next

 to the teaching building. Lily often has lunch there. After lunch she often has a talk with her friends. In front

  of the dining hall is a library. It's a good place to read books.

     Lily gets to school at 7:40 a.m. The first class begins at 8:00 a.m. She has four lessons in the morning

  and two in the afternoon. There is a big gym behind the dining hall. After school, Lily likes going

 swimming there.

     The school is big and nice, and Lily likes it very much.

1. How many classrooms are there in the teaching building?

    A. Sixty.

    B. Seventy.

    C. Eighty.

    D. Ninety.

2. What does Lily like doing after school?

    A. Playing basketball.

    B. Going swimming.

    C. Talking with her friends.

    D. Reading books.

3. Where is the school library?

    A. It's behind the classrooms.

    B. It's next to the offices.

    C. It's in front of the dining hall.

    D. It's behind the dining hall.

4. What does the word "begin" mean in Chinese?

    A. 开始

    B. 结束

    C. 休息

    D. 计划

5. What's the best title (标题) of the passage?

    A. My American Friend

    B. Lily's Good Friends

    C. My Favourite School

    D. Lily's New School

(每题的备选项中，有2个或2个以上符合题意，至少有一个错项)

《现场设备、工业管道焊接工程施工及验收规范》适用于下列( )工程。

A．施工现场组焊的锅炉的焊接工程

B．埋弧焊焊接工程

C．压力容器焊接工程

D．氧乙炔焊焊接工程

E．氩弧焊焊接工程

描述冠心病在人群中分布的最佳指标是

A．病死率
B．死亡率
C．罹患率
D．发病率
E．患病率

张某以虐待罪起诉李某，在一审审理过程中，经调解达成协议，调解书合法送达后，张某反悔。对此，张某可以采取的行为是 ()

A．提出申诉要求再审

B．重新起诉

C．向上级法院提出上诉

D．要求一审人民法院收回调解书重新判决