问题
单项选择题
易炭化物检查法是检查
A.不溶性杂质
B.遇硫酸易炭化的杂质
C.水分及其他挥发性物质
D.有色杂质
E.硫酸盐杂质
答案
参考答案:B
易炭化物检查法是检查
A.不溶性杂质
B.遇硫酸易炭化的杂质
C.水分及其他挥发性物质
D.有色杂质
E.硫酸盐杂质
参考答案:B
用方框中所给单词的适当形式填空,每个单词限用一次。
小题1:It’s very important for us to study . 小题2:My brother Tony runs than me. 小题3:In China, we are supposed to hands when we meet for the first time. 小题4:Last month many people off their lights for Earth Hour 2012. 小题5:Tina doesn’t give up her dreams she can’t speak English very well. |