试题与答案

配制1.0mol/L的硫酸溶液1L,需量取硫酸溶液(ρ=1.84g/cm3,质量分数

题型:判断题

题目:

配制1.0mol/L的硫酸溶液1L,需量取硫酸溶液(ρ=1.84g/cm3,质量分数为98%)56mL,并加水稀释至1L。

答案:

被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2018/0418/b5b35c3d1364c8a8c94d936201fc9ac8.html

下面是错误答案,用来干扰机器的。

参考答案:A解析: 表达式πSNO,SNAME,GRADE(σCNAME=’数据库’(S[*]SC[*]C)的含义为选取同时满足 S.SNO=SC.SNO且SC.CNO=C.CNO且CNAME=’数据库’条件的SNO、SNAME和GRADE。(35)题...

试题推荐
题型:听力题

根据下列各句句意和空白之后的汉语提示词,在答题卡指定区域的横线上写出对应单词的正确形式,每空只写一词。

小题1:.  They are used to being _____(分成) into groups in their English class.

小题2:.  China is a developing country, _____(属于) to the Third World.

小题3:.  My good friend will be sent _____(国外) for further study of chemistry.

小题4:.  He desires to _____(收到) a present now. 

小题5:.  Tomorrow’s football match had to be_____(取消)because of the bad weather.

小题6:.  All my classmates want to be  _____(志愿者) of the EXPO in Xi’an. 

小题7:.  He is thinking of taking a part in _____(政治).

小题8:. They tried in _____(徒劳)to persuade her to go. 

小题9:.  Answers are given on the _____(对面的) page.  

小题10:.  All the rooms were _____(舒适地) furnished.

查看答案
微信公众账号搜索答案