单项选择题

合成定蓝(还原靛蓝) ( )

A．13
B．16
C．9
D．7
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单项选择题
装配有灭火装置的拖船 ( )
A．9
B．11
C．18
D．21
单项选择题
Would you please supply ______ a complete set of catalogues for textile accessories so that we may make choice and work on them.
A．us
B．us with
C．us by
D．us for
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