第8题: [多项选择]()属于执行器。 A. 喷油器 B. 电动汽油泵 C. 怠速步进电动机 D. 空气流量计 参考答案:A, B, C
第9题: [填空题]Like other blacks in the western hemisphere, the ______ majority of African Americans were brought to North America as slaves between the 1700s and the early 1800s. (overwhelm) 参考答案:overwhelming