化学性突出

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问题:

化学性突出

考点:生理心理学生理心理学题库
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经肠道传播的肝炎病毒()。

A.HAV

B.HDV

C.HCV

D.HEV

E.HBV

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(11分)常用于除去高速公路冰雪的是“氯盐类”融雪剂,如NaCl、MgCl2等,请回答:

(1)“氯盐类”融雪剂主要成分的晶体类型为            

(2)冰比硫化氢熔点高的原因是          ,冰分子中氧原子的杂化轨道类型为        

(3)已知X、Y和Z为第三周期元素,其原子的第一至第四电离能如下表所示:

电离能/kJ·mol1I1I2I3I4
X5781817274511578
Y7381451773310540
Z496456269129543
元素Y第一电离能大于X的原因是                                           

(4)融雪剂对环境危害很大,如和路基上的铁等金属形成原电池,加快路面破损。铁元素应用广泛,Fe2+与KCN溶液反应得Fe(CN)2沉淀,KCN过量时沉淀溶解,生成黄血盐,结构如图。

①写出铁元素基态原子价电子的轨道表示式                    

②已知CN- 与 N2 结构相似,1 mol CN- 键数目为             

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腹部MRA技术不包括()

A.不需禁食

B.线圈体线圈、体部相控阵体部线圈

C.扫描技术采用3D-CE-MRA技术的超快速三维梯度回波序 * * D-FISP

D.采集成像一般取6次

E.根据病情可分别得到动脉期和门静脉期

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用医如用将、用药如用兵

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Opened in 1971, the Magic Kingdom was the first theme park at Walt Disney World. All Disney World theme parks are open 365 days a year, although opening and closing times for each park are different from day to day. If  you are traveling without kids, try to visit it on a school day to avoid the largest crowds. If you need to visit it during a school vacation, try at least to avoid the week between Christmas and New Year’s Day and the Fourth of July.

If you are not staying at a Disney World hotel, avoid visiting the Magic Kingdom on its Extra Magic Hours days. The hotel guests get into the park early on those days, increasing the waiting time for visitors who arrive at the normal opening time.

Buy your Walt Disney World tickets online at Disney World’s website. There will be some advice on picking the right ticket. See the guide to Disney World tickets. You will also need to call in advance to make lunch or dinner reservations (预订). Disney accepts reservations, through 1-407-WDW-DINE, up to 180 days in advance. Time does pass quickly, so you should call six months before your trip to get a lunch reservation in the castle. We suggest you should have your lunch at Cinderella’s Royal Table for your tour. If you can’t get the reservation, ask for the Liberty Tree Tavern instead.

Keep in mind that to reach the Magic Kingdom, you must park at Disney World’s Transportation and Ticket Center (TTC) parking lot, take a tram (有轨电车), and then take a boat across the Seven Seas Lagoon to the Magic Kingdom.

小题1:We learn from the passage that ______.

A.children are not allowed to visit Disney World on New Year’s Day

B.Disney World theme parks have the same opening and closing times

C.a single adult had better visit the Magic Kingdom on a school day

D.the Magic Kingdom was the earliest theme park in the world小题2:If you want to have dinner in the Walt Disney World, you can ______.

A.see the guide to Disney World tickets to reserve a table

B.make a call to reserve a table for dinner in advance

C.use 1-407-WDW-DINE to reserve about 3 months in advance

D.go to Cinderella’s Royal Table or the Liberty Tree Tavern at any time you like小题3:Which of the following is TRUE according to passage?

A.Disney World theme parks will be closed on Christmas Day.

B.The only way to get Walt Disney World tickets is to buy them online.

C.Visitors have to reach the Magic Kingdom by tram and then boat.

D.The Magic Kingdom has Extra Magic Hours every day.小题4:What would be the best title for this passage?

A.The History of the Magic Kingdom

B.A Brief Introduction to the Magic Kingdom

C.Advice on Making a Trip to the Magic Kingdom

D.The Most Important Theme Park at Walt Disney World

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