冷却系小循环的水流路线：水泵→（）缸体水套→（），→（）水泵。
参考答案：缸体水套；节温器旁通阀；旁通管
造成旅游者重伤致残的事故属于( )。
A．轻微事故 B．一般事故 C．重大事故 D．特大事故
Nowadays, many teenagers__________ themselves to the computer games, which made them ___________ from the society.
A．cancel, benefit
B．desert, leave
C．quit, range
D．abandon, withdraw
