东风7型内燃机车转向架侧挡与车体之间的间隙和为()mm。

题型:填空题

问题:

东风7型内燃机车转向架侧挡与车体之间的间隙和为()mm。

考点:钳工技能考试内燃机车钳工高级技师内燃机车钳工高级技师题库
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某学生利用烧杯、干燥管和单孔橡皮塞组成制取二氧化碳的装置(如下图所示)。

(1)该装置A中应盛放                           ,B处应放进                         

(2)该装置的优点是                                   

(3)若使正在发生的反应停止,可以通过操作                      来实现,可看到的现象是B中的液面下降到

                                       。

题型:填空题
Dear Mr Brown,
“Do you like my dress?" A little girl asked a passing stranger. "My mommy made it just for me." She said with tears in her eyes. "Well, I think it's very pretty. So tell me , little one, why are you   1   ?"  With a quiver(颤动) in her voice the little girl answered,"After Mommy made me this dress, she had to   2   ." "Well, now," said the lady, "with a little girl like you waiting for her, I'm sure she'll be right   3   ." "No ,Madam,you don't understand," said the child through her tears," my daddy said she's up in  4    now with Grandfather. "Finally the woman   5   what the child meant, and why she was crying. Kneeling down she     6 cradled(抱着) the child in her arms and together they cried for the mommy that was gone. Then suddenly the little girl did something that the woman thought was a bit.She stopped crying, stepped back from the woman and began to  8 .She sang so softly that it was almost a whisper. It was the    9   sound the woman had ever heard, almost like the song of a very small  10 . After the child stopped singing she explained to the lady, "My mommy used to sing that song to me before she went away, and she made me    11  to sing it whenever I started crying and it would make me   12   ." "See," she exclaimed, "it did, and now my eyes are13 !" As the woman turned to go, the little girl grabbed her sleeve, "Madam, can you 14 a minute? I want to show you something." "Of course," she answered, "what do you want me to see?" Pointing to a spot on her dress, she said, "Right here is where my mommy   15  my dress, and here, "pointing to another spot, "and here is another kiss, and here, and here. Mommy said that she put all those kisses on my   16  so that I would have her kisses for every booboo (错误) that made me cry." Then the lady realized that she wasn't just looking at a dress, no, she was looking at a  17 who knew that she was going away and would not be there to kiss away the   18   that she knew her daughter would get. So she took all the love she had for her beautiful little girl and put them into this dress that her child now so proudly 19  . She no longer saw a little girl in a    20   dress. She saw a child wrapped…in her mother's love.
小题1:
A.standingB.smilingC.cryingD.talking
小题2:
A.go outB.run awayC.leave awayD.go away
小题3:
A.inB.outC.backD.down
小题4:
A.skyB.airC.houseD.heaven
小题5:
A.sawB.realizedC.recognizedD.though
小题6:
A.gentlyB.rudelyC.happilyD.carefully
小题7:
A.sadB.terribleC.strangeD.exciting
小题8:
A.cryB.shoutC.laughD.sing
小题9:
A.sweetestB.lowestC.simplestD.slightest
小题10:
A.beeB.childC.birdD.cat
小题11:
A.likeB.wishC.permitD.promise
小题12:
A.stopB.beginC.continueD.finish
小题13:
A.cleanB.wetC.dryD.clear
小题14:
A.leaveB.keepC.sitD.stay
小题15:
A.kissedB.madeC.gave D.washed
小题16:
A.handB.heartC.bodyD.dress
小题17:
A.womanB.soulC.motherD.Person
小题18:
A.hurtsB.problemC.joysD.surprises
小题19:
A.heldB.putC.woreD.hid
小题20:
A.easyB.beautifulC.attractiveD.simple
题型:填空题

钢筋弯曲机弯钢筋时,严禁在弯曲钢筋的作业半径内和机身不设( )的一侧站人。弯曲好的半成品应堆放整齐,弯钩不得朝上。

A.防护装置
B.漏电保护器
C.固定销
D.活动销

题型:填空题

绘图说明扩大基础图。

题型:填空题

某雌雄异株二倍体植物为XY型性别决定,该植物有蓝花和紫花两种表现型,由两对等位基因A和a(位于常染色体上)、B和b(位于X染色体)共同控制。已知其紫色素形成的生物化学途径如右图所示,即紫色素的形成与酶A强烈相关,但酶A的生成过程会被酶B强烈抑制。

现用蓝花雄株(aaXBY)与某紫花雌株杂交,F1中的雄株全为紫花。请回答下列问题:

若该蓝花雄株(aaXBY)与另一杂合紫花雌株杂交,则F1的表现型及比例为()

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