问题
单项选择题
定期清洗散热器外表面尘土和油污，应用压缩空气或（）作洗涤剂、用软毛刷或尼龙刷清洗，也可用压力清水喷射清洗。
A、棉纱
B、柴油
C、液压油
D、汽油
答案
参考答案：B
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定期清洗散热器外表面尘土和油污，应用压缩空气或（）作洗涤剂、用软毛刷或尼龙刷清洗，也可用压力清水喷射清洗。
A、棉纱
B、柴油
C、液压油
D、汽油
参考答案：B
| 信息归纳 | ||||||||||||||||
| Mike is a middle school student. He goes to school from Monday to Friday. His home is about 5 miles from school. He usually walks to school. It takes him 50 minutes to walk there. Nancy’s home is a little farther. It’s 20 miles from school. So she often takes the school bus. It takes her 15 minutes to get to school. Bob lives outside the city. It’s a town 30 miles away from his school. He takes the subway. It takes him 8 minutes to get to school by subway. He can have breakfast at home and then leave for the subway station. He studies very hard.
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