问题
单项选择题
O-sepa型选粉机属于（）
A、离心式
B、旋风式
C、笼式
D、组合式
答案
参考答案：C
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O-sepa型选粉机属于（）
A、离心式
B、旋风式
C、笼式
D、组合式
参考答案：C
| 综合填空。 | |
clothes. In the past, many Europeans and Americans believed that people wore their clothes 2 they didn't want other people to see their 3 bodies. Today we believe that people first started 4 clothes to 5 themselves from the sun, the wind, the rain, the cold and other bad weather. 1. 2. 3. 4. 5. |