【单选题】关于苯骈二氮杂卓类药物的鉴别反应的现象,以下说法不正确的是
A.
加硫酸后呈现不同的颜色,且一般在浓硫酸中的颜色与在稀硫酸中的颜色也不同
C.
1位N未被取代的苯骈二氮杂卓类药物水解后可以发生芳伯胺基反应
【单选题】The heat from the sun can't escape because of too much ______. [ ]
【单选题】The trees can part of the heat from the sun.
【简答题】将下列段落翻译成中文 Geothermal heat pumps, which use the earth as a heat sink in the summer and a heat source in the winter are viable nationwide.Therefore,they rely on the relative warmth of the earth for the...
【判断题】人口因素在社会发展中的作用是可以制约和影响社会发展。