按《车用压燃式发动机和压燃式发动机汽车排气烟度排放限值及测量_爱下问搜题

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问题单项选择题

按《车用压燃式发动机和压燃式发动机汽车排气烟度排放限值及测量方法》（GB3847—2005）规定，在用汽车加载减速试验不透光烟度法适用于装用压燃式发动机、最大总质量大于400kg、最大设计速度大于或者等于（）km/h的在用汽车。

A．50

B．60

C．70

答案

参考答案：A

完形填空

The story is told about what happened on a flight between a passenger and an air hostess. The passenger rang and told the air hostess (乘务员) that he needed a cup of __36__to take his medicine when the plane just took off. She told him that she would_37__him the water in ten minutes.
Thirty minutes later, when the passenger’s ring for_38__sounded, the air hostess was in a hurry. She was kept so_39__that she forgot to deliver (送) him the water. As a result, the passenger was_40__to take his medicine.She_41__over to him with a cup of water, but he_42__it.
In the following hours on the_43__, each time the air hostess passed by the _44__ she would ask him with a smile_45__he needed help or not. But the passenger__46_paid attention to her.
When the passenger was going to get__47__the plane, he asked the air hostess to__48_him the passengers’ booklet (意见薄). She was very__49__. She knew he would write down_50_words, which might result in the loss of her job. _51__with a smile she handed it to him.
Off the plane, she_52_the booklet, and cracked a smile, _53_the passenger put it, “On the flight, you asked me whether I need help or not for twelve times_54_. How can I refuse your twelve sincere（真诚的） smiles?”
That’s__55__! Who can refuse twelve sincere smiles from a person?

名词解释

“混合”型病毒