第2题: [多项选择]下面关于冷粘法的说法,正确的有()。 A. 冷粘法工艺在常温下作业 B. 冷粘法施工方便、安全 C. 基层处理时应将聚氨酯涂膜防水材料的甲料、乙料、二甲苯按1:1.5:3的比例配合 D. 铺贴立面或大坡面合成高分子防水卷材不宜用满贴法 E. 接缝口处采用密封材料封严时,其宽度不应小于5mm 参考答案:A, B, C
第17题: [单项选择]It is taken as a great contribution made by ( ) that languages in the world are classified into different language families according to their genetic relations. A. modem linguists B. traditional grammarians C. sociolinguists D. historical linguists 参考答案:D 答案解析: