未分类题

在平面直角坐标系xOy中,函数xy+|x -y+1|=0的图象是( ).
(A)直线x=0,y=0和x-y+1=0
(B)直线x=0和x-y+1=0
(C)点(0,0)和直线x-y+1=0
(D)点(0,1)和(-1,0)

A.
(A)直线x=0,y=0和x-y+1=0
(B)直线x=0和x-y+1=0
(C)点(0,0)和直线x-y+1=0

【参考答案】

参考D

<上一题目录下一题>

热门试题

单项选择题

听力原文： Today at 12:00 noon the National Weather Bureau has located Hurricane Bell out in the Gulf of Mexico. It is packing winds at 110 miles per hour and due to hit the east coast town of Galveston at approximately 1:00 p. m tomorrow. Winds are expected to be around 150 to 175 miles per hour, when it comes inland. Residents of Galveston and surrounding towns are advised to evacuate by 6:00 am tomorrow morning. Evacuation centers have been set up in Houston and Corpus Christi, Texas. Residents are urged to take Inter state 10 to Houston and Interstate 59 to Corpus Christi. The speed limit will not exceed the standard limit of that interstate. You are urged to drive with caution due to heavy winds and rain. Take only your necessary clothing and enough food for five days. Next report will be at 2:00 pmWho has authorized the weather bulletin?A．National Weather Bureau.B．The local radio station.C．The local TV station.D．The Broadcasting Industry.

A.
B.
C.National
D.
B．The
E.
C．The
F.
D．The
G.

未分类题

D．Greek.

相关试题