ECM利用大气压力传感器信号确定当前的大气压力，以便用于空气燃

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问题单项选择题

ECM利用大气压力传感器信号确定当前的大气压力，以便用于空气燃料比控制以及海拔高度（）功能。

A.进气压力增加

B.功率补偿

C.功率降低

D.进气温度降低

答案

参考答案：C

句型转换

同义句转换。

1. The dictionary cost me fifty yuan.

I _______ the dictionary _______ fifty yuan.

2. She has made up her mind that she won't do that again.

She has _______ _______ to do that again.

3. He didn't catch the last bus, so he had to go back on foot.

He had to walk back _______ he _______ the last bus.

4. The runner fell behind the others though he did his best.

The runner did his best, _______ he still _______ to keep up with the others.

5. I didn't go there for the outing with them because l was ill.

My illness _______ me _______ them in the outing.

单项选择题

迟发型皮试结果判定时，皮内试验仅有红肿的反应结果是（）

A.无反应（-）

B.弱阳性（+）

C.阳性（++）

D.强阳性（+++）

E.强阳性（++++）