加工紫铜材料工件时,选用的铣刀材料应以()为主。A、高速钢B、YT类硬质合金C、YG

题型:单项选择题

问题:

加工紫铜材料工件时,选用的铣刀材料应以()为主。

A、高速钢

B、YT类硬质合金

C、YG类硬质合金

D、立方氮化硼

考点:数控车床工考试数控车床工考试题库
题型:单项选择题

今年初,广州市某医院一批患者使用了某制药厂生产的针剂后,多人中毒.经查明:这批针剂是用了假的乙二醇为原料而具有毒性.下列关于乙二醇(化学式为C2H6O2)的说法不正确的是(  )

A.乙二醇属于有机物

B.每个乙二醇分子由2个碳原子,6个氢原子和1个氧分子构成

C.每个乙二醇分子由1O个原子构成

D.乙二醇由三种元素组成

题型:单项选择题
Dear son,

The day that you see me old, have patience and try to understand me. If I get  when eating, if I can not dress, have patience. Remember the hours I spent  it to you. If,   I speak to you, I repeat the same things thousand and one times, do not  me. Listen to me  . When you were small, I had to read thousand and one times the  story until you get to sleep. When I do not want to have a shower, neither shame me  scold me. Remember when I had to chase you with thousand excuses I  , in order that you wanted to bathe. When you see my  on new technologies, give me the necessary time and not  me by mocking smiles. I taught you how to do so many things: to eat good, to dress well, to  life. . . When at some moment I lose the  in conversation with you, do not become annoyed, as the most important thing is not my  but surely to be with you and to  you listening to me. When my  legs do not allow me to walk, give me your hand, the same way I  when you gave your first steps. And when someday I say I do not want to live any more and that I want to die, do not get angry. Try to understand that my age is not lived but  .
Some day you will discover that,   my mistakes, I always wanted the  thing for you and tried to prepare the way for you. Help me to walk, help me to end my way with love and  . I will pay you by a smile and by the immense love I have had always for you.
I love you, son!
Your father
小题1:
A.angryB.satisfied
C.tidy D.dirty
小题2:
A.teachingB.mentioning
C.warningD.talking
小题3:
A.beforeB.when
C.unlessD.until
小题4:
A.disturb B.interrupt
C.upsetD.break
小题5:
A.finally B.soon
C.insteadD.too
小题6:
A.goodB.interesting
C.difficultD.same
小题7:
A.orB.nor
C.andD.but
小题8:
A.inventedB.realized
C.spottedD.imagined
小题9:
A.viewB.prejudice
C.favorD.ignorance
小题10:
A.look down onB.look into
C.look upD.look through
小题11:
A.overcomeB.confront
C.defeatD.challenge
小题12:
A.sightB.theme
C.memoryD.touch
小题13:
A.narrationB.conversation
C.statementD.thought
小题14:
A.haveB.make
C.getD.force
小题15:
A.exhaustedB.broken
C.foldedD.injured
小题16:
A.madeB.worked
C.didD.tried
小题17:
A.wasted B.spent
C.countedD.survived
小题18:
A.in spite ofB.regardless of
C.rather thanD.other than
小题19:
A.worstB.leastC.most D.best
小题20:
A.mercyB.support
C.enthusiasmD.patience
题型:单项选择题

盛装()℃以下介质的压力容器,应选用防霜液面计。

A、10

B、20

C、30

D、0

题型:单项选择题

电阻的温度系数是指温度每升高()电阻所变动的数值与原来电阻值的比。

A、0.5℃

B、1℃

C、1.5℃

D、2℃

题型:单项选择题

下面哪一项不是对膀胱癌的正确叙述()

A.50%病人5年内复发

B.复发者往往更为恶性

C.首先发生骨盆淋巴结转移

D.首先出现的症状是肾功能不全

E.膀胱灌注是主要的辅助和姑息治疗

更多题库