第19题: [单项选择]电源引入防雷箱外壳与防雷箱内接地端子间采用截面积不小于()mm2铜导线连接。 A. 2 B. 4 C. 6 D. 8 参考答案:C
第20题:[单项选择]<br><br><br/>A.extensive<br/>B.enormous<br/>C.overall<br/>D.entire<br/>参考答案:D 答案解析:根据上句“Some geography books focus on a small area like a town or city 和本句的对比关系,可以肯定本句中的a state,a regio
第32题: [单项选择]So loudly _________ that the audience in the back heard him clearly. A. does he speak B. he speaks C. did he speak D. he spoke 参考答案:C 答案解析:[解析] 本题考查倒装句的用法。so...that句型中,如果so提前到句首,后面的句子要倒装。由于句中使用的是一般过去时态,所以选项C符合题意。