某砼水池在浇筑后在墙板表面发现有线状白印,其成份是()A、氢氧化钙 B、碳酸钙 C、氯化 发布时间:2021-02-26 11:20 │ 来源:www.tikuol.com 题型:多项选择题 问题: 某砼水池在浇筑后在墙板表面发现有线状白印,其成份是()A、氢氧化钙B、碳酸钙C、氯化钙D、硅酸钙
题型:多项选择题 按要求写单词。1. short (比较级) ________________2. play (现在分词) ________________3. book (复数形式) ________________4. old (反义词) ________________5. to (同音词) ________________ 查看答案
题型:多项选择题 It's the first overseas trip that President Hu Jingtao has made this year,_______?[ ]A. is it B. isn't it C. has he D. hasn't he 查看答案