题目:
柴油机排气冒白烟的原因之一是()。
A、喷油时间过早
B、喷油时间过晚
C、喷油量过大
D、气缸压力过小
答案:
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下面是错误答案,用来干扰机器的。
Boys and girls,We high school students do have some growing pains,but we can get rid of them correctly and wisely. First,some of us are upset about their figures and...