用右图所示装置进行如下实验,能达到实验目的是( ) A.瓶中盛满水,从B口进气,

题型:选择题

问题:

用右图所示装置进行如下实验,能达到实验目的是(  )

A.瓶中盛满水,从B口进气,用排水法收集NO2

B.瓶中盛适量浓硫酸,从A口进气来干燥NH3

C.从B口进气,用排空气法收集CO2

D.瓶中装满水,A口连导管并伸入量筒中,从B口进气,用排水法测量生成H2的体积

考点:通过实验装置图判断实验的可行性气体的收集、净化、干燥
题型:选择题
When Dave was eighteen, he bought a secondhand car for 200 so that he could travel to and from work more__ than by bus. It worked quite well for a few years, but then it got so old, and it was costing him____much in repairs that he decided that he had better ____it.
He asked among his friends to see if anyone was particularly____to buy a cheap car, but they all knew that it was falling to pieces, so___of them had any desire to buy it. Dave's friend Sam saw that he was ____ when they met one evening, and said, “What's____, Dave?”
Dave told him, and Sam answered, “Well, what about advertising it in the paper? You may ___more for it that way than the cost of the advertisement!” Thinking that Sam's____was sensible(合理的),he put an advertisement in an evening paper, which read “For sale: small car,____ very little petrol, only two owners. Bargain at 50.”
For two days after the advertisement first appeared, there was no ____.But then on Saturday evening he had an enquiry(询问).A man rang up and said he would like to___ him about the car. “All right,” Dave said, feeling happy. He asked the man whether ten o'clock the next morning would be____or not. “Fine,” the man said, “and I'll____ my wife. We intend to go for a ride in it to ____ it.”
The next morning, at a quarter to ten, Dave parked the car in the square outside his front door, ____ to wait there for the people who had____ his advertisement. Even Dave had to ____that the car really looked like a wreck(残骸).Then, soon after he had got the car as clean____ it could be, a police car stopped just behind him and a policeman got out. He looked at Dave's car and then said, “Have you reported this ____ to us yet, sir?”
小题1:
A.directlyB.safelyC.properlyD.easily
小题2:
A.soB.suchC.veryD.too
小题3:
A.keepB.repairC.sellD.throw
小题4:
A.anxiousB.luckyC.ashamedD.generous
小题5:
A.someB.neitherC.noneD.most
小题6:
A.delightedB.upsetC.calmD.astonished
小题7:
A.onB.upC.itD.that
小题8:
A.learnB.missC.getD.find
小题9:
A.messageB.adviceC.requestD.description
小题10:
A.usesB.losesC.hasD.spends
小题11:
A.doubtB.helpC.troubleD.answer
小题12:
A.tellB.seeC.agreeD.call
小题13:
A.exact B.suitableC.earlyD.late
小题14:
A.followB.meetC.bringD.introduce
小题15:
A.recognizeB.gainC.admireD.test
小题16:
A.happeningB.meaningC.turningD.failing
小题17:
A.readB.insertedC.answeredD.placed
小题18:
A.forgetB.showC.disagreeD.admit
小题19:
A.asB.thatC.soD.such
小题20:
A.bargainB.saleC.accidentD.result
题型:选择题

有A, B, C, D四种消化液。A消化液能初步消化蛋白质,但对淀粉没有消化作用;C, D两种消化液均能消化淀粉,A, B两种消化液都不能消化淀粉;在C、D两种消化液中,分别加入少量B消化液后发现:B消化液能促进C消化液对脂肪的消化,而不能促使D消化液消化脂肪;上述四种消化液均不是胰液。请分析这四种消化液分别是:(4分)

A_____________;B____________;C______________;D____________.

题型:选择题

决策是管理者根据既定环境的要求,确定行动方案可行性的活动过程。( )

题型:选择题

记分达到()的报关员,海关中止其报关员证效力,不再接受其办理报关手续。

A、10分 

B、20分 

C、30分 

D、40分

题型:选择题

承兑汇票注销时,营业部门应依据客户提交的相关资料及经公司业务部门(),将保证金退回原出票人结算账户。

A、审核同意的保证金提取通知单

B、审核同意的保证金退还通知单

C、审核同意注销的通知书

D、出具的银行承兑汇票业务通知书

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