问题
单项选择题
发动机排气中的氧气含量高时，氧传感器的输出电压通常为（）。
A.0.6～0.9V
B.0.3V以下
C.12V
D.0V
答案
参考答案：B
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发动机排气中的氧气含量高时，氧传感器的输出电压通常为（）。
A.0.6～0.9V
B.0.3V以下
C.12V
D.0V
参考答案：B
| 完形填空。 | ||||
| My uncle is a keen (热心的) sports man. He often shoots during the weekend and usually comes home with a bag 1 birds. Last Saturday evening he came home 2 than usual. He didn't say anything when he came in. He threw his bag on the table and sat by the fire. He 3 and angry. " 4 good day, dear?" his wife asked. "What do you think?" he answered unhappily and pointed at the bag."Look at this bag!" There is only a bird in it and it 5 me a lot of money! "Weren't there any birds?" my aunt asked kindly. "Hundreds of them!" my uncle said, "but I 6 the day quarrelling with a farmer." "What happened, dear?" she asked. "I shot my first bird 7 5:00 this morning. Soon after that I shot at another one and fired. But I don't know what happened. I think I slipped (滑倒) because I didn't shoot the bird, I hit a cow and killed it. The owner got very 8 me. I quarreled (争吵) with him for hours and 9 I had to 10 him $50. | ||||
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