【简答题】A.unskilled B.unqualified C.incapable D.inadequate
【单选题】The food is inadequate for ten people.
【简答题】函数 y= 1- x 2 (-1≤x≤0) 的反函数是( ) A. y= 1- x 2 (0≤x≤1) B. y=- 1- x 2 (0≤x≤1) C. y=- x 2 -1 (-2≤x≤-1) D. y=- 1- x 2 (-1≤x≤0)
【单选题】三相负载星形连接的时候,线电压等于 相电压,线电流等于相电流。
【单选题】The food is insufficient for three people.
【判断题】负载星形连接时,相电压等于线电压,相电流不等于线电流。