第8题: [单项选择]软化水或再生排废水,有时呈黄色及交换剂产生溶胶现象,可能产生的原因是() A. 水温过高或PH值过大,超出交换剂稳定范围,使交换剂焦化 B. 交换剂失水后,遇水突然膨胀,造成破碎 C. 交换剂未以盐型备用 D. 水温过高或PH值过小,超出交换剂稳定范围,使交换剂焦化 参考答案:C
第19题: [单项选择]Do you think the girl got her ticket A. Ask for the man for diner. B. Nei C. .[C] Tell the man the right way. 参考答案:B 答案解析:[听力原文] F: Excuse me, how can I get to Star Restaurant M: Go along the road and turn right at