由于容器在使用中超压而使器壁应力大幅增加,超过材料的屈服极限而引起的断裂称为()
A.塑性破裂
B.脆性破裂
C.疲劳破裂
D.蠕变破裂
参考答案:A
- It’s a pity that none of these educational CD-ROMs is suitable for me.
-______. I can show you some others.
A.That’s all right.
B.Why not say so?
C.No problem.
D.Don’t worry.
水管型温度传感器的感温段大于管道口径的()时,可安装在管道的顶部。
A.1/2
B.1/3
C.2/3
D.3/4