由若干条首尾顺序相接.中间无分叉的风路称为（）。 A.复杂并联

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问题单项选择题

由若干条首尾顺序相接.中间无分叉的风路称为（）。

A.复杂并联风路

B.复杂串联风路

C.简单并联风路

D.简单串联风路

答案

参考答案：D

补全对话，情景问答

1. — Look! What is this? — This is a ____________ of China.
2. — Where is Shanghai? — It's ____________ of Beijing.
3. — Do you know the capital city of this country? — I know. It's ____________.
4. — Do you see the flag of ____________? — Yes, I do.
5. The U. K. has a king or queen. This is a ____________.

选择题

— She looks very happy. She ____ have passed the exam.

— I guess so. It's not difficult after all. [ ]

A. should

B. could

C. must

D. might