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铜器久置于空气中会和空气中的水蒸气、CO 2 、O 2 作用产生“绿锈”，该“绿锈”俗称“铜绿”，化学式为［Cu 2 （OH） 2 CO 3 ］，“铜绿”能跟酸反应生成铜盐和CO 2 、H 2 O。某同学利用下述系列反应实现了“铜→铜绿→……→铜”的转化。 （1）从三种不同分类标准回答，“铜绿”属于哪类物质？______、______、______。 （2）请写出铜绿与盐酸反应的化学方程式________________________________ ______________________________________________________________________________。 （3）写出B的化学式______。 （4）上述转化过程中属于化合反应的是______，属于复分解反应的是______。
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举一反三
【单选题】Section B Directions: In this section, you will hear 3 short passages. At the end of each passage, you will hear some questions. Both the passage and the questions will be spoken only once. After you ...
A.
Because he believes in motivating his team as individuals.
B.
Because he wants to keep his team under pressure.
C.
Because he feels it awkward to give them talks.
D.
Because he thinks his team should have the character to fight back.
【单选题】海尔集团以前的主营业务是生产冰箱,后来随着企业的发展壮大,逐步向彩电洗衣机、空调等相关的电器产业发展,这是采用了( )的战略。
A.
同心多元化
B.
水平多元化
C.
负相关多元化
D.
不相关多元化
【单选题】Listen to the conversation and choose the best answer.
A.
The manager wasn ’ t in the office.
B.
The manager was so demanding that he was afraid to speak out.
C.
The manager didn ’ t give him a chance to talk.
D.
The manager is always on the road.
【简答题】(《温病条辨.中焦篇》第19条)阳明温病,____,尚未可下者,黄连黄芩汤主之。不渴而舌滑者,____。
【单选题】【D4】 ROGER: SO, HOW IS YOUR NEW ROOMMATE? MARTHA: 【D1】______ ROGER: WHAT HAPPENED? MARTHA: SHE' S ALWAYS MAKING LOUD NOISES AT MIDNIGHT AND WHEN I REMIND HER, SHE ALWAYS MAKES RUDE REMARKS. ROGER: 【D2...
A.
WHY DON' T YOU HAVE A HEART TO HEART CHAT WITH HER?
B.
SHE REALLY TURNS ME OF F.
C.
I HOPE SHE CAN BE DRIVEN OUT.
D.
BUT HOW MANY TIMES DID YOU TRY?
【简答题】When I started my career in management, I was really green, but I always tried to stay positive on the job. I was working for a new company that was having a difficult time with its customers. Actuall...
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