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问题 多项选择题

下列有关风管法兰连接说法错误的是（）。

A、按设计要求确定装填垫料后，把两个法兰先对正，穿上几个螺栓并带上螺母，进行紧固

B、连接法兰的螺母不能在同一侧

C、不锈钢风管法兰连接的螺拴，宜用同材质的不锈钢制成，如用普通碳素钢标准件，应按设计要求喷涂涂料

D、铝板风管法兰连接应采用强尼龙螺栓，并在法兰两侧垫镀锌垫圈

答案

参考答案：A, B

单项选择题

职业安全健康管理体系文件的结构分为职业安全健康管理手册、( )及其他文件等三个层次。

A．作业指导书

B．程序文件

C．操作规程

D．管理制度
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补全对话，情景问答
补全对话.

(At Green Street Police Station)    A=policeman   B= woman
A: Excuse me. ___1___?
B: Yes, it's about my daughter. She goes to school in the morning and comes back home at five
    o'clock in the afternoon every day. But now it's six o'clock. She doesn't come back now.
A: Your daughter? ___2___?
B: Her name is Nancy, Nancy Brown.
A: ___3___?
B: She is eight years old.
A: ___4___?
B: She is a little bit thin and medium build. She has curly blonde hair and blue eyes. She is wearing
    a green coat, blue pants and black shoes today.
A: ___5___?
B: No, she isn't at school. I call her teacher, Miss Green. She says Nancy leaves school at 4:55.
A: OK, Mrs. Brown. We will do our best (尽力) to look for her. We will call you if we find her.
B: Thank you.

A. Can I help you
B. How old is she
C. Does she go to school today
D. What does she look like
E. What's her name
F. Is she at school now
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