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【简答题】
氧传感器的输出信号随排气中的氧气的含量而变化,当混合气的空燃比大于14.7时,它输出近 0.1 V 的电压信号;当混合气的空燃比小于14.7时,它输出将近 V的电压信号。
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举一反三
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A.
higher productivity, but a lower average income
B.
lower productivity, but a higher average income
C.
lower productivity, and a lower average income
D.
higher productivity, and a higher average income
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A.
可传递性
B.
时效性
C.
载体依附的可转换性
D.
价值性
【单选题】Passage 2 Questions 6 to 10 are based on the following passage: The Chinese have used a method called acupuncture (针灸) to perform. operations for about 4, 000 years without putting the patient to slee...
A.
a medical operation
B.
a medical needle
C.
a medical technique
D.
a medical machine
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