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【单选题】
下列属于有源光器件的是()A.
光调制器
B.
光衰减器
C.
LED
D.
光隔离器
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反馈参考答案：
举一反三
【单选题】In the gas chromatography, the adjusted retention time would reflect the interactions between ( )
A.
the component and the carrier gas
B.
the component and the stationary phase
C.
the components in the sample
D.
the carrier gas and the stationary phase
【单选题】Unlike affixes, ( ) are often free morphemes.
A.
suffixes
B.
prefixes
C.
inflectional morphemes
D.
roots
【单选题】The core component in the gas chromatography is ( ).
A.
the detector
B.
the column
C.
the sample injection system
D.
the monochromator
【判断题】Compounding is one type of word formation by combining both free morphemes and bound morphemes.()
A.
正确
B.
错误
【简答题】free morphemes（西安交大2008研)
【单选题】The distinction between free morpheme and bound morpheme is whether morphemes can be other morphemes.
A.
connected to
B.
independent of
C.
supplemented to
D.
reliable on
【简答题】The morphemes can be grouped into free morphemes and ____morphemes.
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