问题
单项选择题
在规定条件下，材料或制品加熟到释放出的气体能在瞬间着火并出现火焰的最低温度称 为，( )。
A．燃点
B．闪燃
C．闪点
D．自燃点
答案
参考答案：C
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在规定条件下，材料或制品加熟到释放出的气体能在瞬间着火并出现火焰的最低温度称 为，( )。
A．燃点
B．闪燃
C．闪点
D．自燃点
参考答案：C
| 阅读短文，判断句子对(√)错(×)。 | |
He comes back on the first day. " Mike, how about your new school? " his mother asks. " Everything is OK except the maths teacher. I can't believe her. Because (因为) first (最初) she says three and three is six, and then (然后) she says that two and four is six, too." Mike answers. ( ) 1. Little Mike goes to a new school. ( ) 2. Mike likes his maths teacher. ( ) 3. Mike's teacher is wrong. ( ) 4. One and five is six. |