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【简答题】
What are indicator electrode and reference electrode? Briefly describe basic principie of direct potentiometry.
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【简答题】Diaphragm valves use a flexible and to regulate flow. The handwheel operates just like the handwheel on valve. The is attached to a device called the . The compressor pushes on a flexible diaphragm. T...
【单选题】某彩色地板砖规格为200×200×5mm,灰缝为1mm,结合层为20厚1:2水泥砂浆,试计算100m2地面中地板砖和砂浆的消耗量。(面砖和砂浆损耗率均为1.5%)
A.
1.535立方米
B.
2.035立方米
C.
2.535立方米
D.
3.035立方米
【多选题】关于阿司咪唑的描述正确的是
A.
为丙胺类H1受体拮抗剂
B.
在体内经代谢转化为活性药物
C.
对中枢神经系统渗透性很差，无嗜睡作用
D.
长效抗过敏药
E.
无局部麻醉作用和抗胆碱作用
【判断题】Generally pressure drop across the body of the nonweir diaphragm valves is larger than that of weir diaphragm valves.
A.
正确
B.
错误
【简答题】Diaphragm valves do not use .
【单选题】-- Well, thanks very much. -- _________.
A.
My pleasure
B.
No thanks
C.
It doesn't matter
【单选题】某彩色地板砖规格为300×300×5mm,灰缝为1mm, 200m2地面中地板砖的消耗量为(),已知:面砖损耗率均为1.5%。
A.
2221
B.
2254
C.
2475
D.
2512
【判断题】Diaphragm valves are mechanical valves that prevent reverse flow in piping
A.
正确
B.
错误
【单选题】Well, thanks very much for_________ my talk. Are there any questions?
A.
listening to
B.
looking at
C.
hearing to
相关题目：
【单选题】某彩色地板砖规格为300×300×5mm,灰缝为1mm, 200m2地面中地板砖的消耗量为(),已知:面砖损耗率均为1.5%。
A.
2221
B.
2254
C.
2475
D.
2512