【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】What does our atmosphere do?
A.
It absorbs the heat from the ground and sends it to the Sun.
B.
It absorbs the heat from the Sun and emits it back to the Earth.
C.
It absorbs the heat from the Sun and emits it the same way.
D.
It absorbs the heat the ground emits and sends some of it back to the Earth.
【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.
【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。
【单选题】关于苯并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.
加硫酸后呈现不同颜色的荧光,且在稀硫酸中荧光的颜色略有不同
C.
1- 位氮原子未被取代的苯并二氮杂卓类药物水解后可以呈芳伯胺基反应