阀门的传动方式用阿拉伯数字表示的,数字9表示的是()
A.气动
B.液动
C.气-液动
D.电动
参考答案:D
根据图片完成对话。
Dog: Is this your 1_____?
Zoom: No, my picture is on the 2_____
Donkey: Is that a 3_____?
Zip: Yes, 4_____ is.
Monkey: Where is my ball?
Rabbit: Look, it's on the 5_____.
下列程序中,fun( )函数的功能是计算x2-2x+6,主函数中将调用fun( )函数计算。 y1=(x+8)2-2(x+8)+6 y2=sin2(x)-2sin(x)+6 请填空 #include "math.h" double fun(double x)return(x*x-2*x+6);) main() double x,y1,y2; printf("enter x:");scanf("%1f",&x); y1=fun(______); y2=fun(______); printf("y1=%1f,y2=%1f\n",y1,y2);