霍尔信号发生器叶片离开气隙时，分电器信号线应有12V信号输出。
参考答案：错
—If there are _________cars, there will be _________air pollution.
—Yes. And the air will be cleaner.
A．less; less
B．fewer; fewer
C．less; fewer
D．fewer; less
什么叫跖管综合征？
