卡铂：
A．骨髓抑制明显
B．肾脏毒性明显
C．二者均是
D．二者均否
参考答案：A
One solution to major security problems is ______, which are frequently installed to fix knownsecurity holes.
A．additions B．compensations C．patches D．complements
危险源可分为（）
A.第一类危险源
B.第二类危险源
C.一般危险源
D.严重危险源
E.较大危险源
