- 讲师:刘萍萍 / 谢楠
- 课时:160h
- 价格 4580 元
特色双名师解密新课程高频考点,送国家电网教材讲义,助力一次通关
配套通关班送国网在线题库一套
第三问请详解.前面两问可以忽略9.今有硫酸和盐酸的混合物20克,往溶液中逐滴加入17.1%的氢氧化钡溶液时,生成硫酸钡的质量和总溶液的pH变化如右图.求:⑴ 最初混合液中硫酸的质量百分比浓度.⑵ 最初混合液中盐酸的质量百分比浓度.⑶ 在某温度下溶液pH等于7时,将溶液蒸发掉43.02克水后,过滤、烘干,得到4.98克固体,则此溶液中溶质在该温度下的溶解度是多少?是先蒸发再过滤的。
原则明确要求,培训过程是双向的互动交流,而不是单向的传授。
A.温故知新
B.双向沟通
C.适合
D.反应
请帮忙给出正确答案和分析,谢谢!
The______made slow but sure progress along the main street.
A.procedure
B.profession
C.process
D.procession
请帮忙给出正确答案和分析,谢谢!
Equipment and technology upgrades do not______ solve the problem either.
A.virtually
B.rarely
C.necessarily
D.practically
请帮忙给出正确答案和分析,谢谢!
挂灰烟叶形成的原因之一是()。
A.采收烟叶成熟度不够
B.烟叶变黄期烤房内温度忽低,上下波动严重,叶尖容易挂灰
C.变黄阶段低温时问过短
D.定色阶段时问过短
请帮忙给出正确答案和分析,谢谢!
Which of the following sentences is grammatically CORRECT?
A.China will further intensify bilateral, multilateral and regional economic cooperation in a long run.
B.My company is a big firm, there nearby is a big market for software in my city.
C.We will never stop less they give up at first.
D.Despite of his opposition, she worked in her own way and started her preparations.
请帮忙给出正确答案和分析,谢谢!
In recent years, both Americans and Chinese have gained sight of the original vision that brought them together. The italicized word is a(n)______in the sentence.
A.compound word
B.derivation
C.adverb
D.conjunction
请帮忙给出正确答案和分析,谢谢!
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