硝酸银容量法测定水中氯化物含量时,如水样中氯离子含量小于5mg∕L时,可将硝酸银溶液稀释为1mL相当于()后使用。
参考答案:0.5mgCl-
()在他的《风竹图》的题诗中写道:“衙斋卧听萧萧竹,疑是民间疾苦声,些小吾曹州县吏,一枝一叶总关情”,从不同方面反映美的本质。
A、陆游
B、杜甫
C、郑板桥
D、李商隐
By no means _____ to your parents.
A.is this the first time you are lying
B.this is the first time you have lied
C.this is the first time you tell a lie
D.is this the first time you have lied