题目内容

简述铝合金的分类。

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铸造铝合金有()。

A. LY12
B. LE5
C. ZL14

铝合金根据成分和工艺特点,可分为()和铸造铝合金。

ZL10是()合金

In my company, all employees are expected to have a________attitude towards their co-workers.

A. cooperation
B. corporation
C. cooperative
D. cooperate

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