第8题: [单项选择]The center of buoyancy and the metacenter are in the line of action of the buoyant force(). A. only when there is positive stability B. only when there is negative stability C. only when there is neutral stability D. at all times 参考答案:D
第12题: [单项选择](Looking through the window) at all the cars on the road, (the traffic) (was getting) much (heavier) than it had been an hour ago. A. Looking through the window B. the traffic C. was getting D. heavier 参考答案:B 答案解析:分词looking的逻辑主语应该是人,而非the traffic改“the traffic”为“John saw that the traffic”。
第19题: [单项选择]施工现场的安全生产由( )负总责。 A. (建设单位 B. (施工单位 C. (监理单位 D. (建设行政主管部门 参考答案:B 答案解析:[解析] 施工单位与建设单位签订施工合同后,将其中的部分工程分包给分包单位,则施工现场的安全生产由施工单位负总责。
[点评] 本题考察施工单位安全责任的相关规定。