车削细长轴时，使切屑流向待加工表面，并使车刀易切入工件，一般取λs=( )。
A．-3°～-5°
B．0°
C．+3°～+10°
参考答案：C
在08－32捣固车电气系统中表示暖风机电源信号的端子为（）。
A、AL
B、BL
C、KL
D、HL
Addict drug are most commonly abused because the individual()
A．Desires to become independent
B．Wants to fit in with the peer group
C．Attempts to blur reality and reduce stress
D．Enjoys the social interrelationships that occur
