第6题: [单项选择]下列表示FGD系统可靠性的表达式中,正确的是()。 A. 装置运行小时/实际要求装置运行小时×100% B. 可运行小时/考核期总小时×100% C. 事故停机+减负荷运行和强制带负荷运行小时/考核期总小时 D. 强迫停机+强制减负荷运行和强制负荷运行小时/装置要求投运小时 参考答案:A
第12题: [单项选择]What did people think about tower blocks when they were first built A. Town planners thought they were badly conceived. B. The public compared them with rural housing. C. The man in the street mistrusted them. D. People thought them an improvement on suburban housing. 参考答案:C 答案解析:[解析] 文中的最后一段主要是讲述了公众和居民对tower block的不满和失望。