下载APP
举一反三
【单选题】passage one Which is safer-staying at home, traveling to work on publictransport, or working in the office Surprisingly, each of thesecarries the same risk, which is very low. However, what aboutflyin...
A.
they are very rare
B.
they often cause loss of life
C.
they always occur in big cities
D.
they arouse the interest of all the readers
相关题目：
【单选题】固体硝酸铵溶于水，溶液变冷。对于该过程，下列函数中变化值为负的是 。
A.
△ G
B.
. △ H
C.
△ S
D.
△ U
【判断题】硝酸铵是生理碱性盐,硫酸铵是生理酸性盐。
A.
正确
B.
错误
【单选题】硝酸铵是一种
A.
生理酸性盐
B.
生理中性盐
C.
生理碱性盐
D.
生理酸碱盐
【判断题】硝酸铵中NH4+和NO3-离子各占一半，因此施在水田和旱地，肥效都一样。
A.
正确
B.
错误
【多选题】亚硝酸铵具有（）作用。
A.
强氧化
B.
霉变
C.
腐蚀
D.
致癌
E.
酸败
【单选题】长期施用硝酸铵的土壤,其pH值
A.
升高
B.
降低
C.
不变
D.
各种情况都可能发生
【单选题】硝酸铵具有（）
A.
助燃性
B.
腐蚀性
C.
毒害性
D.
以上答案都不正确
【判断题】将硝酸铵和柴油按一定比例混合在一起，组成了炸药是物理变化。
A.
正确
B.
错误
【单选题】硝酸铵是（）晶体。
A.
白色
B.
黄色
C.
淡黄色
【单选题】passage one Which is safer-staying at home, traveling to work on publictransport, or working in the office Surprisingly, each of thesecarries the same risk, which is very low. However, what aboutflyin...
A.
they are very rare
B.
they often cause loss of life
C.
they always occur in big cities
D.
they arouse the interest of all the readers
【单选题】硝酸铵具有（）
A.
助燃性
B.
腐蚀性
C.
毒害性
D.
以上答案都不正确
【单选题】硝酸铵施用时,适于作 。
A.
种肥
B.
基肥
C.
与未腐熟的有机肥混施
D.
追肥