T•JK3、T•JK3-A型减速器工作气缸在空载状态下最低启动压力应不大于（）KPa。
A.50
B.100
C.200
D.250
参考答案：B
下列各项中，不属于长期负债的是( )。
A．应付债券 B．长期应付款C．一年内到期的长期债务 D．长期借款
The driver has much experience of driving, and _____ he behaved very calmly in the dangerous situation.
A．though
B．however
C．therefore
D．otherwise
