The vacuum coffee maker is a Acomplicated device in Bwhere steam is Cgenerated in a glass bowl Dconnected to a container of coff

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问题 The vacuum coffee maker is a Acomplicated device in Bwhere steam is Cgenerated in a glass bowl Dconnected to a container of coffee grounds and hot water.

选项 A、 
B、 
C、 
D、 

答案B

解析 Where cannot follow a preposition in an adjective clause Correction: which.
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