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单选题
“A centrifuge consists of an electric motor driving a vertical shaft on the top of which is mounted the bowl assembly”.According to this sentence, we can know that is mounted on the top of the vertical shaft（）
A
a centrifuge
B
an electric motor
C
a bowl assembly
D
a driving motor
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更多 “单选题“A centrifuge consists of an electric motor driving a vertical shaft on the top of which is mounted the bowl assembly”.According to this sentence, we can know that is mounted on the top of the vertical shaft（）A a centrifugeB an electric motorC a bowl assemblyD a driving motor” 相关考题
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