问题
判断题
差厚打印采用的打印液是重铬酸钠,浓度控制在2~3g/l。
答案
参考答案:对
差厚打印采用的打印液是重铬酸钠,浓度控制在2~3g/l。
参考答案:对
小题1:There are _______notices(启示)in the Lost And Found. A. B. 4 C. 1 小题2: Who lost a pencil case? A .Jenny B. Dave C. Mike 小题3: Linda found_____. A. a ruler B. a set of keys C. a watch 小题4: What color is the watch? A .It’s red. B. It’s white C. It’s blue. 小题5: You lost your keys. What number should (应该) you call ? A. 26-7895 B. 78-5900 C. 289-9000 |