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【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
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反馈参考答案：
举一反三
【简答题】Revise the sentence to get rid of the confusing shift. When anyone shows up, they tell you to come right in.
【简答题】备选单词(sacrifice, shallow, merely, oppose, typical, stable, reject, valid, tight, rid),注意形式变化。 In order to see what the weather is like right now, you _______ have to look out of the window.
【单选题】下列现象不可以用闪光融合解释的是( )。
A.
日光灯的光线是间歇性地闪动的，但是我们看不出它的闪动
B.
电风扇快速转动的时候我们看不到扇叶的形状。
C.
在明暗变化的边界上，常常在亮区看到一条更亮的光带，在暗区看到一条更暗的线条。
D.
电视图像实际是间歇性地更换的，但是我们感觉到的是连续的。
【简答题】_______ asks you to get rid of the bad habits is quite right. A．Who B．Those who C．Anyone whom D．Whoever
【简答题】备选单词(sacrifice, shallow, merely, oppose, typical, stable, reject, valid, tight, rid),注意形式变化。Some people _________ the eating of meat because they do not think it is right to kill animals.
【简答题】Watch the video clip and write down how heart works: Your heart is divided into left & right halves which work together like a dual pump. On the right side of your heart, deoxgenated blood from your b...
【判断题】The purpose of the pulmonary circulation is to take blood from the right side of the heart, leaving out the pulmonary artery, and go to the lungs to pick up oxygen and get rid of carbon dioxide. The b...
A.
正确
B.
错误
【单选题】( )——A couch potato and probably a drug addict, you can easily get hands on him. However, he thinks he has a right to use and abuse everything you own and will hardly be able to fulfill your dreams. G...
A.
Mr. Right
B.
Mr. Family Man
C.
Mr. Grumpy
D.
Mr. Parasite
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