A:150mL1mol•L﹣1的NaCl
B:25mL 2mol•L﹣1的FeCl3
C:150mL3mol•L﹣1的KCl
D:75mL 2mol•L﹣1的CaCl2
某醇C5H11OH发生消去反应时,可以得到两种烯烃,又可发生催化氧化,则该醇的结构式可能为( )
—Why didn't you invite John to your birthday party?
—Well, you know he's _______ .
计算:(π﹣1)0+ (12)-1+|5-27|﹣23.
如图所示是医学上用来测量 ____的仪器,它的分度值是 ____,当前的示数是 ____℃.