第2题: [单项选择]The new measure will reduce the chance of serious injury in the event of an accident. The underlined part means __________. A. if an accident happens B. if an accident can be prevented C. before an accident D. during an accident 参考答案:A
第5题: [单项选择]Questions 29 to 32 are based on the passage you have just heard. A. When you have small children. B. When you live in an apartment. C. When space is limited. D. When you live in the city. 参考答案:C 答案解析:[听力原文] When is the toy dog a good choice
第24题: [单项选择]工程网络计划费用优化的目的是为了寻求()。 A. 工程总成本最低时的最优工期安排 B. 工期固定条件下的工程费用均衡安排 C. 工程总成本固定条件下的最短工期安排 D. 工期最短条件下的最低工程总成本安排 参考答案:A 答案解析:费用优化又称工期成本优化,是指寻求工程总成本最低时的工期安排。或按要求工期寻求最低成本的计划安排的过程。