A:利用金属钠或者金属钾
B:利用质谱法
C:利用红外光谱法
D:利用核磁共振氢谱
Though he was badly injured, he is now________.
—I think buyers________ spend too much time going to shops.
如图是小华对水沸腾现象进行的实验探究,当温度升高到90℃时开始记录数据,以后每隔1min记录一次水的温度,直到水沸腾了6min为止.通过实验得到下表数据.