做化学实验时,当需要用45g蒸馏水配置溶液时,取用45g蒸馏水最适合

做化学实验时,当需要用45g蒸馏水配置溶液时,取用45g蒸馏水最适合的仪器是(  

A.100mL量筒     B.50mL烧杯          C.托盘天平      D.50mL量筒和胶头滴管

答案

D

相关题目

有关真核细胞DNA复制和转录这两种过程的叙述,错误的是 A.
有关真核细胞DNA复制和转录这两种过程的叙述,错误的是 A.复制和转录过程中都会发生DNA分子的解旋 B.两种过程都有酶参与反应 C.两种过程都以脱
Mr Reed made up his mind to devote all he had to________some schools for poor c
Mr Reed made up his mind to devote all he had to________some schools for poor children. A.set up                B.setting up C.have set up           D.having set up
将100g溶质质量分数为16%的HCl溶液与100g溶质质量分数为16%的NaO
将100g溶质质量分数为16%的HCl溶液与100g溶质质量分数为16%的NaOH溶液混合后,滴入几滴紫色石蕊试液,则最终溶液颜色是()。A.蓝色 B.紫色 C.红色 D.无
(12分)写出下列反应的离子方程式(1)过氧化钠与水    
(12分)写出下列反应的离子方程式(1)过氧化钠与水                                               (2)金属铝与稀硫酸溶液
The plane flew smoothly ______ in the sky and people spoke ______ of the experi
The plane flew smoothly ______ in the sky and people spoke ______ of the experienced pilot. A. high;high      B. highly;highly C. high;highly   D. highly;high
What actually ______ the accident has not yet been determined.   A. brought ou
What actually ______ the accident has not yet been determined.   A. brought out    B. brought on     C. brought about     D. brought up   
在实验条件下,测试某种变温动物离体细胞的呼吸强度(E)
在实验条件下,测试某种变温动物离体细胞的呼吸强度(E)受温度变化的影响,正确结果是(    )
欧洲联盟是一个( ) A.宗教和文化组织              
欧洲联盟是一个( ) A.宗教和文化组织               B.政治和经济组织 C.军事和政治组织               D.宗教和政治组织

最新题目