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进行过滤操作应选用的一组仪器是()

单选题
2021-09-02 13:23
A、玻璃棒、滤纸、烧瓶、漏斗、铁架台
B、滤纸、烧杯、试管夹、漏斗、玻璃棒
C、漏斗、玻璃棒、烧杯、铁架台、滤纸
D、烧杯、酒精灯、试管、铁架台、漏斗
查看答案

正确答案
C

试题解析

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(), or drum is used for hauling in or letting out the wires or ropes which will fasten the ship to the shore.
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The () is used for hauling in or letting out the wires or ropes.
Vessels must be()valid certificate of nationality or certificated of registry or license.
When loading or discharging dry mud or cement,crew members should use goggles and().
Effects which are dutiable or subject to prohibitions or restrictions should be declared in ().
The()may examine or re-examine the goods or take samples from them straightaway in the absence of the consignee or the consignor whenever it considers this necessary.
()are liable to be stoten, pilfered or may damaged due to improper handing or stowage.
Banks have no liability for any delay or loss caused by postal or telex failure.
逻辑运算符(AND、NOT、OR)的运算顺序是AND→OR→NOT。
《义务教育化学课程标准(2011年版)》指出:化学实验是进行科学探究的重要方式,学生具备基本的化学实验技能是学习化学和进行探究活动的基础和保证。试回答《义务教育化学课程标准(2011年版)》对初中学生的实验技能提出的基本要求是什么?
逻辑运算符(AND、NOT、OR)的运算顺序是AND→OR→NOT。
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

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

教育部制订的《义务教育化学课程标准(2011年版)》指出:化学是一门以实验为基础的学科,在教学中创设以实验为主的科学探究活动,有助于激发学生对科学的兴趣,引导学生在观察、实验和交流讨论中学习化学知识,提高学生的科学探究能力。
问题:
(1)请列举初中化学3个最基础的化学实验。
(2)通过“粗盐提纯”实验,简要说明过滤应注意的问题。
(3)除了过滤之外,请列举初中化学3个最基本的化学实验技能。

进行过滤操作应选用的一组仪器是()
()是教师通过操作实物来帮助学生认识事物、获得化学知识、学习实验技能的一种常用的化学教学基本方法。
Mainly east 3 or 4 partly cloudy to overcast occasional rain()slowly south moderate or good.
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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.
If he is a common carrier,he is absolutely responsible to the owner of the goods carried ()any loss or damage to them unless caused by an Act of God or the Queen’s enemies,or the inherent vice in the goods themselves,or the negligence of the owner of the goods,or a general average sacrifice.
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Owners are to be responsible for loss of or damage to the goods or delay in delivery of the goods only in case the loss,damage or delay has been caused by the improper or negligent stowage of the goods.This means that().
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.
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翻译:With Average or With Particular Average(WA or WPA)()
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