According to the passage, which of the following statements is TRUE?
A.Susan couldn't manage to catch up on her schoolwork.
B.Susan frequently went out to discos and parties in the evening.
C.Susan was busy learning lines while her girlfriends were dating boys.
D.Susan became involved with men during her school years.
第1题
控制压力管道压力、温度波动的主要目的是()。
A.节约能源
B.防止韧性破坏
C.防止蠕变
D.防止疲劳破坏。
第5题
金属材料具有一定的韧性是为了防止压力管道发生()破坏。
A.失稳
B.爆破
C.脆性
D.蠕变。
第7题
压力容器破坏形式中,()破坏更具有突然性和危险性。
A.脆性破坏
B.疲劳破坏
C.韧性破坏
D.蠕变
第8题
A.塑性破坏
B.脆性破坏
C.疲劳破坏
D.蠕变破坏
第9题
正确控制介质温度的意义为()。
A.保证传输量
B.降低成本
C.保证安全
D.防止压力管道韧性破坏
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