主动悬架调节需要消耗能量，故系统中需要能源。（）
参考答案：对
下列程序段的执行结果为______。 X=2 Y=1 If X*Y＜1 Then Y=Y-1 Else Y=-1 Print Y-X＞0
A．True
B．False
C．-1
D．1
What happened to the city after the mass move
A．Housing costs decreased.
B．Crime rate was much lower than before.
C．All business moved out.
D．Cities declined.
