看图写出正确的时间。

1. -What's the time?    -It's 5:00/________.

2. -What's the time?         -It's 4:30/________.

3. -What's the time?      -It's 11:00/________.

4. -What's the time?       -It's 1:30/________.

5. -What's the time?      -It's 3:30/________.

6. -What's the time?        -It's 8:00/________.

7. -What's the time?        -It's 3:00/________.

板坯在加热过程中会出现（）缺陷。

A.过热和过烧

B.氧化

C.脱碳

D.粘钢和加热不均