杜邦终缩聚反应器搅拌器的金属网板是通过5根拉杆固定在两端的端_爱下问搜题

搜题请搜索小程序“爱下问搜题”

问题判断题

杜邦终缩聚反应器搅拌器的金属网板是通过5根拉杆固定在两端的端板上。（）

答案

参考答案：错

解析：杜邦终缩聚反应器搅拌器的金属网板是通过6根拉杆固定在两端的端板上。

补全对话，情景问答

选择合适的应答句。

( ) 1. Where is my sweater?
( ) 2. Is it your dress?
( ) 3. Are the shoes white?
( ) 4. Whose cap is this?
( ) 5. Is that a green bag?
( ) 6. What's the weather like today?
( ) 7. What time is it?

A. No, it's black.
B. Yes, they are.
C. Yes, it is.
D. It's on the desk.
E. It's John's.
F. It's six o'clock.
G. It's cloudy.

单项选择题

根据闪点的高低，可以确定生产、加工、储存可燃性液体场所的火灾危险性类别。闪点>28℃，但<60℃的液体属于（）液体。

A.甲类

B.乙类

C.丙类

D.丁类