第21题: [单项选择]某项工作有两项紧前工作A、B,其持续时间是tA=6,tB=8,其最早开始时间是工作A为5,工作B为6,则本工作的最早开始时间是( ) A. 6 B. 11 C. 13 D. 14 参考答案:D 答案解析:[解析] 工作最早开始时间等于各紧前工作的最早完成工作的最大值,A:6+5=11;B:8+6=14,故选D。
第26题:[判断题] The four main differences between distribution systems are retail concentration, channel length, channel exclusivity, and channel quality. A.正确 B.错误 参考答案:A
第33题: [单项选择]What docs the man imply about Mary A. In Room 110. B. In the meeting room. C. In the auditorium. D. In the staff room. 参考答案:C 答案解析:[听力原文] W: Excuse me, can you tell me where the Staff’s Association is meeting M: It was going