单项选择题

某零件的对称度公差要求是0.05mm,若测得实际对称面与公称中心面的差值为0.03mm,则该项指标合格。
A、正确
B、错误

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单项选择题

Study the following dialogue. What function does it play according to the function of language?
─A nice day, isn't it?
─Right! I really enjoy the sunlight.
A、Emotive
B、Phatic
C、Performative
D、Interpersonal

剪压比对截面变形有很大影响。

答案：正确