基准物质草酸钠的干燥条件是()干燥至恒重。
A.110℃
B.80℃
C.130℃
D.室温、空气干燥
参考答案:A
电动洗碟(外部尺寸60x90x70厘米)()
完成句子。
1. She has a lot of experience _____ (应对) teenagers' problems.
2. What would you do if you burned yourself _____ (偶然地).
3. The window is broken. Please _____ (查明) who did that.
4. You should _____ your teachers or parents _____ (向……征求意见).
5. —Do you know when the book _____ (出版)?
—Last year, I think.