单项选择题
The maximum power can be obtained when the load works a...
判断题 The maximum power can be obtained when the load works at a matching state, and the efficiency of the circuit at this time is the highest.
硬度是指矿物抵抗外力刻划、压入、研磨的程度,常用莫氏硬度计来表示。手指甲的应对约为2.5,普通小刀的硬度约为5...
单项选择题硬度是指矿物抵抗外力刻划、压入、研磨的程度,常用莫氏硬度计来表示。手指甲的应对约为2.5,普通小刀的硬度约为5.5。( ) A. 对 B. 错
设有定义:int a=7;float x=2.5,y=4.7; 则表达式x+a%3*(int)(x+y)%2/...
单项选择题设有定义:int a=7;float x=2.5,y=4.7; 则表达式x+a%3*(int)(x+y)%2/4的值是( ) A. 2.75 B. 3.5 C. 0.0 D. 2.5