用硝酸汞滴定法测定水样中氯化物时,滴定终点的颜色为什么颜色?()。
A.淡紫色
B.淡黄色
C.深兰色
D.白色
E.橙色
参考答案:A
Take time lo relax by listening to music, reading a book or just spending some time alone.
Relaxing allows you to your students with more energy.
A. return B. to return C. returning
在“洪涛凌崖,而折隙首颓”中,“凌”之义为()
A.结冰
B.冲犯
C.漫越
D.登上