【判断题】【消耗次数：1】
若溶液是胶体或有颜色就不能用pH计测定溶液的pH值。
①
正确
②
错误
参考答案：
复制
纠错
相关题目
【单选题】
用湿润的pH试纸测定溶液的pH，不变的是（）。
①
<img class="kfformula" src="20200629/1593410377146261.png" data-latex="{Na}_{2}{SO}_{4}" width="84" height="32"/>溶液
②
HCl溶液
③
NaOH溶液
④
氨水
随机题目
【单选题】
6. Was it in this palace________ the last emperor died?
①
that
②
in which
③
in where
④
which
【单选题】
Is ______necessary to complete the design before National Day?
①
this
②
that
③
it
④
he
【单选题】
3.Idontthink_____possibletomasteraforeignlanguagewithoutmuchmemorywork.
①
this
②
that
③
its
④
it
【单选题】
This is a big class, and ______ of the students are girls.
①
two third
②
second three
③
two thirds
④
two three
【单选题】
3.Iveread_______sportsnewsabouttheF1racetoday.
①
two
②
pieces
③
two pieces
④
two pieces of
【单选题】
8. Bill saidthey would have _________ holiday.
①
a two-month
②
two months
③
two-months
④
two months
【单选题】
4.—CanIhelpyou?—Idlike________formytwindaughters.
①
two pair of shoes
②
two pairs of shoe
③
two pair of shoe
④
two pairs of shoes
【单选题】
10.I spent __________ in doing my homework yesterday.
①
a half and two hour
②
two and a half hour
③
two hour and a half
④
two and a half hours
【单选题】
—Whats one fourth and a half, do you know?—Yes, its ______.
①
two sixths
②
three fourths
③
one three
④
three sixths