首页/ 题库 / [单选题]测定总硬度时,Cu2+

测定总硬度时,Cu2+干扰滴定,可用于掩蔽的试剂是()

单选题
2021-12-24 00:35
A、三乙醇胺
B、盐酸羟胺
C、氨水
D、硫化钠
E、硫代硫酸钠
查看答案

正确答案
D

试题解析

相关题目
boost的意思是:help or encourage to increase or improve
eloquent的意思是:fluent or persuasive in speaking or writing
应用物理的、化学的技术方法,采用理化检验的设备或化学物质,按一定的测量或试验要求对产品进行检验的方法是()。

A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.

烹饪原料品质的检验方法有理化检验和()检验两大类。
理化检验是利用()或化学药剂进行检验。
内在质量检验由专业技术检验单位进行,经检验后出具检验报告说明货物质量。
《电梯监督检验规程》规定,电梯()等相关单位应当向检验机构提供有关的技术资料,并安排相关的专业人员到现场配合检验。
油液监测技术主要有()。Ⅰ.经验法;Ⅱ.磁塞法;Ⅲ.光谱分析法;Ⅳ.理化检验;Ⅴ.铁谱分析法。
Mainly east 3 or 4 partly cloudy to overcast occasional rain()slowly south moderate or good.
()any case or suspected case of quarantinable disease,or any case of eruptive disease or any death be discovered,the local quarantine officer must be notified immediately.
Should any case or suspected case of quarantinable disease,or any case of eruptive disease or any death be discovered,the local Quarantine Officer must be()immediately.
对于感官检验与理化检验的比较下列说法哪些是正确的()
Masters are()solely responsible for all damages or accidents of whatever kind resulting from the navigating or handling of their vessels by day or by night.
系统中雷达状态包括Unknown、Operational(or ON)、Failed(or OFF)、Detached。
The carrier is liable for loss of or damage to the goods or delay in delivery caused by fire,()the claimant proves that the fire arose from fault or neglect on the part of the carrier,his servants or agents.
Shutdown price(or point,or rule) 停业价格(或停业点、停业原则)
翻译:With Average or With Particular Average(WA or WPA)()
()shall be liable for loss of and damage to the Vessel and/or goods arising or resulting from inaccuracies in stating the description,quantity,weight,measurement or contents.
Every deliberate act of wrongdoing by the master or any of the crew against the ship or cargo,without the authorization or privity of the Shipowner or his agent,is().
广告位招租WX:84302438

免费的网站请分享给朋友吧