压力容器按破坏(失效)机理可分为()破坏。A.韧性B.脆性C.疲劳D.腐蚀E.蠕变F.以上都是

压力容器按破坏(失效)机理可分为()破坏。A.韧性B.脆性C.疲劳D.腐蚀E.蠕变F.以上都是

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My problem is that I don't have much time to do the work.

My problem is that I don't have much time to do the work.

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Many valuable resources in China’s west area are to be exploited and used.

Many valuable resources in China’s west area are to be exploited and used.

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Luckily, the planes appear to be quite safe.

Luckily, the planes appear to be quite safe.

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Take this empty box away and bring me a full one.

Take this empty box away and bring me a full one.

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