【单选题】Java程序运行入口的main方法(即主类的main方法)的返回类型是什么?
【单选题】液压泵的理论流量( )实际流量。 液压马达的理论流量()实际流量
【判断题】液压泵是将电动机的机械能转换为液压能的转换装置,输出流量和压力。
【单选题】The main factor in changing the amount of heat on the earth is __.
A.
man's agriculture and industry ways
【单选题】The main factor leading to a huge underfed population in developing countries is ______.
【单选题】The main idea of this passage is that a person's image is a key factor in the success of his or her job application.
【单选题】Nutrition is a main factor for a man to live longer.