升力不对称会产生什么不利() A.桨盘向前边倒 B.桨盘向后边倒 C.桨盘向左边倒

题型:单项选择题

问题:

升力不对称会产生什么不利()

A.桨盘向前边倒

B.桨盘向后边倒

C.桨盘向左边倒

D.桨盘向右边倒

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将10g不纯的氯化镁样品(杂质不溶于水),放入100g水中,充分搅拌,待样品中的氯化镁全部溶解后过滤(滤液损失不计),将所得滤液与63.3g氢氧化钠溶液恰好完全反应,生成5.8g白色沉淀.

求:(1)样品中氯化镁的质量.

(2)反应后所得溶液中溶质的质量分数.

题型:单项选择题
Most people have no idea of the hard work and worry that go into the collecting of those interesting birds and animals that they pay to see in the zoo. One of the questions that is always asked of me is 36  I became an animal collector in the first 37  .The answer is that I have always been interested in animals and zoos. According to my parents, the first word I was able to say with any 38    was not the traditional “mamma” or “daddy”,39   the word “zoo”, which I would 40  over and over again with a exciting 41   until someone, in groups to 42  me up, would take me to the zoo. When I 43  a little older, we lived in Greece and I had a great 44 of pets, ranging from owls(鹰) to seahorses, and I spent all my spare time 45the countryside in search of fresh specimens to 46  to my collection of pets.
47 on I went for a year to the City Zoo, as a student 48  , to get experience of the large animals, such as lions, bears, bison and ostriches,49  were not easy to keep at home. When I left, I 50  had enough money of my own to be able to 51  my first trip and I have been going 52  ever since then. Though a collector's job is not an easy one and is full of  53  ,it is certainly a job which will appeal 54  all those who love animals and 55 . 
小题1:
A.howB.whereC.whenD.whether
小题2:
A.regionB.fieldC.placeD.area
小题3:
A.clearnessB.emotionC.feelingD.affection
小题4:
A.exceptB.butC.except forD.but for
小题5:
A.reciteB.recognizeC.readD.repeat
小题6:
A.volumeB.noiseC.voiceD.pitch
小题7:
A.closeB.shutC.stopD.comfort
小题8:
A.grewB.was growingC.growD.grown
小题9:
A.manyB.amountC.numberD.much
小题10:
A.living B.seeingC.likingD.exploring
小题11:
A.increase B.includeC.addD.enrich
小题12:
A.later B.furtherC.thenD.farther
小题13:
A.servantB.keeperC.memberD.assistant
小题14:
A.whoB.theyC.of whichD.which
小题15:A successfully    B. gladly       C. nearly       D. luckily 
小题16:
A.payB.finance C.allowD.provide
小题17:
A.normally B.oftenC.usuallyD.regularly
小题18:
A.unhappiness B.sorrowsC.excitement D.disappointments
小题19:
A.forB.withC.toD.from
小题20:
A.voyage B.travelC.journeyD.Trip
题型:单项选择题

休克的特殊监测中,不包括()

A.中心静脉压(CVP)或肺毛细血管楔压(PCWP)

B.心排出量(CO)和心脏指数(CD.

C.动脉血气分析和DIC

D.脉率(次/分)、收缩压(mmHg)和休克指数

E.动脉血乳酸盐和胃肠黏膜内pH值

题型:单项选择题

氧气瓶在储存和运输过程中应装上瓶帽,其作用是()。

A.美观

B.防止漏气

C.防止爆炸

D.保护瓶阀

题型:单项选择题

冷却水系统上的“Y”形过滤器的作用是()

A.过滤制冷剂

B.过滤冷却水

C.过滤冷凝水

D.过滤补充水

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