皮皮学，免费搜题
登录
搜题
【多选题】
以下关于碱式滴定管的操作正确的是( )A.
检漏：管中装满水后，直立放置 2min ，若无水滴滴下即可使用
B.
洗涤：用洗涤液洗涤时，每次装液 5~10mL ，将，慢慢转动使洗涤液布满，然后将洗涤液从管口倒出
C.
排气泡：将橡皮管向上弯曲 90 °，尖嘴上斜，挤捏玻璃珠，使溶液从尖嘴快速喷出，气泡即可随之排掉
D.
使用碱式滴定管时，应捏玻璃珠的下半部
E.
调零：排尽气泡后，使滴定管垂直，调节溶液液面使其最低处与“ 0 ”刻度线相切
F.
左手握管，拇指在前，食指在后，其他三个手指辅助夹住出口管，用拇指和食指捏住玻璃珠所在的部位，向右边挤橡胶管，使玻璃珠移至手心一侧，溶液即可流出
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【简答题】基坑土方开挖应遵循的原则，什么是“时空效应”？
【简答题】土方开挖的原则是什么?
【单选题】听力原文：M: Sally, come downstairs, please. Look at this job advertisement. W: ( from a distance) I'm coming. Wait a moment. ( nearer ) Eric , I'm here. What's the matter? M: Look, Sally. Hem's a job adve...
A.
If the salary is high or low.
B.
If the fringe benefits are good or bad.
C.
If the working place is far or near.
D.
If the job is suitable or not.
【单选题】（ ）our general agent，you would also haye to look after the advertisin9．
A.
Being
B.
For
C.
As
D.
To be
【简答题】基坑土方开挖应遵循的基本原则是什么？
【单选题】The general ordered his men to ______.
A.
look for his teeth and buy all of them
B.
arrest the dentist at once
C.
make all the shops stop selling teeth
D.
buy all the teeth in all the shops
【单选题】Why does the general appearance of actresses look ludicrous?
A.
Because they want their appearance in the fashion.
B.
Because the top designers want them to follow the fashion.
C.
Because the top designers want them to make fashion.
D.
Because the top designers want them to lead the fashion.
【简答题】Have a look at the paragraph to find out the examples that support the general statement. Then fill out the chart below. A welfare is supposed to cheat. Everybody expects it. Faced with sharin...
相关题目：