关于储金球的说法中正确的是 () A.可补偿合金凝固收缩 B.可避免铸件收缩 C.

题型:多项选择题

问题:

关于储金球的说法中正确的是 ()

A.可补偿合金凝固收缩

B.可避免铸件收缩

C.直径略大于铸件蜡型最厚处

D.位置距蜡型1mm

E.应在铸圈的温度中心区

考点:口腔正畸(医学高级)医学高级(口腔正畸)仿真试题九
题型:多项选择题

按课文内容填空。

1.__________在空中飘浮着,碰到冷风,就变成__________落下来,这就是__________,有时候变成__________打下来,就是__________。到了冬天,变成小花朵飘下来,人们就把它叫做__________。   

2.宇航员睡觉的时候,____________________。宇航员喝水用的是_________________。 因为____________________,即使把杯子倒过来,水也不会________________。

题型:多项选择题

第三部分阅读理解(共两节,满分40分)

第一节(共15小题;每小题2分,满分30分)

  阅读下列短文,从每题所给的四个选项(A、B、C和D)中,选出最佳选项,并在答题卡上将该项涂黑。

A

DIY gifts: A Drive For Creativity

  In times when people are seeking innovation(创新),giving a DIY gift appears as one possibility for those who like to keep up with the times.A DIY gift may be especially suited to young people seeking to step out of the norm.Do it yourself and turn the most unexpected things into wonderfully creative gifts.

  A handful of chocolates can become extra-special for the do-it yourself innovator.Add a picture and a few words to a cup,and the cup,which translated in Chinese becomes a homonym(同音词) for "a lifetime",can turn good wishes into good spirits.

  A self-written newspaper and T-shirts with unlimited choices of patterns can become the kinds of priceless gifts that money can't buy.

  Birthday presents,gifts for loved ones and children's educational toys all offer potential for the imaginative creator.Every DIY gift,which sends a special message or has a special meaning,is outstanding.That's what creativity is all about.

  Young people are interested in creaativity,fashion,romance and things that touch the emotions.In some cities,DIY gift shops are doing well and enjoying more and more customers.Do - it - yourself,as an alternative to ready - made gifts,often proves a more effctive way to expess feelings toward someone you care about.

  It's really simple.Think about the person who'll receive the gift.Then,look for materials that show the person's special qualities.The color of the deep blue sea along with white seashells can be perfect elements(元素) for the young surfer.There is potential without limits.

  Operating a DIY gift shop brings its own challenges.Shops must offer a great variety of materials.They may be grass,trees,and humanshapes.Let your imagination run wild.Who knows what the next person through the door will be looking for?

  56.The underlined phrase "a lifetime" maybe a homonym in Chinese for "______".

   A.一帆风顺    B.一辈子    C.生活如意     D.幸运

  57.Young people are interested in the followings,except________.

   A.creativity B.fashion C.romance D.limits

  58.If you'd like to give your friend a DIY gift,you should look for matericals that show his/her _______.

   A.qualities B.preferences C.potential D.creativity

  59.In the last paragraph,the sentence "who knows what the next person through the door will be looking for?" means that_______.

   A.A DIY gift shop must have a great variety of materials in store

   B.You should know what the customers will wwant

   C.DIY gift shops are doing well and enjoying more and more customers

   D.A DIY gift turns the most unexpected things into creative gifts

题型:多项选择题

()系统是保证获得预定产品产量和纯度的关键设备.

A.压缩

B.换热

C.制冷

D.分离

题型:多项选择题

活重

题型:多项选择题

妊娠8周时,终止妊娠最常采用的方法是

A.钳刮术

B.芫花宫腔内引产

C.负压吸引术

D.静脉滴注催产素

E.利凡诺尔羊膜腔内注射

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