油专用变压器档位有（）档。
A.5
B.6
C.7
D.8
参考答案：C
已知点P在直线x+y+5=0上，点Q在抛物线y2=2x上，则|PQ|的最小值等于______．
I like going to the movies with friends and__sports.
A．play
B．playing
C．to play
D．played
