未知题型 What do Ho's words 'Bear in mind that undetectable does not equal absent' mean?A.AIDS virus can exist in the blood without being detecteD.B.AIDS virus is undetectable in the blooD.C.No ADS virus can be detected in the blooD.D.No virus found in the blood means no ADS.

单项选择题 会议的成本控制监视各项活动以保证它们按计划进行并纠正各种重要偏差的过程。

未知题型 设a＝5，b＝10，则执行 c=Int((b-A)*Rnd+A0+1 后，c值的范围为D.5～9