单项选择题


A．mechanical
B．mechanism
C．machine
D．machinery
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单项选择题
A．so-calledB．well-calledC．such-calledD．bad-called
A．so-called
B．well-called
C．such-called
D．bad-called
单项选择题
A．inB．ofC．withD．of
A．in
B．of
C．with
D．of
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