问题 问答题 简答题

请写出24±0.15mm的基本尺寸,最大极限尺寸,最小极限尺寸和公差分别是什么?

答案

参考答案:

公差是指实际参数值的允许变动量;基本尺寸24mm,最大极限尺寸24.15mm,最小极限尺寸23.85mm,公差是±0.15mm

单项选择题 A1型题
完形填空
I tend to accept any idea put forward by experts on TV. One day, a sociologist proposed that the   31  society has been consuming modern humans little by little. For fear that I would become a victim of the consumer society, I   32  hurried to a bicycle shop in my neighborhood.   33  the shopkeeper Mr. Johnson was selling me the bicycle, he said, “This is the best thing you   34  have done. Life has become hopelessly   35  . A bicycle is simple, and it brings to you   36  things: fresh air, sunshine and exercise.” I agreed. Happy as a child, I got on the bicycle and headed out onto the streets. After some time, I   37   at the other end of the town. I was   38   that this simple vehicle could let me   39   long distances in a fairly short time. But how   40  did I really go?
Since I hated to be   41  , I went back to Mr. Johnson and asked him to   42  an odometer (里程表) on my bicycle. He agreed, but   43  , “An odometer without a speedometer (速度计) is like a   44  without a knife.” I admitted he was right and in a few minutes, the two devices (装置) were   45  to the handlebars of my bicycle. “What about a horn?” he then asked. “Look, this horn is no larger than a matchbox and has many   46  .” Attracted by these functions, I bought the horn.
“You can’t leave the back part   47  ,” noted Mr. Johnson. He fixed a metal box with buttons   48  the seat, and said, “Is there anything better than this oven when you feel   49   on your way? I can give you a special discount.” I was not strong enough to   50   the offer.
“I congratulate you once more; this is the best thing you could have done,” said Mr. Johnson in the end.
小题1:
A.adultB.humanC.consumer D.bachelor
小题2:
A.eventuallyB.immediatelyC.reluctantlyD.gratefully
小题3:
A.AlthoughB.BecauseC.AsD.Unless
小题4:
A.wouldB.shouldC.mustD.could
小题5:
A.boringB.complicatedC.stressfulD.tough
小题6:
A.naturalB.mysteriousC.complexD.unique
小题7:
A.gave upB.broke downC.calmed downD.ended up
小题8:
A.amazedB.amusedC.confusedD.concerned
小题9:
A.marchB.driveC.coverD.measure
小题10:
A.farB.longC.fastD.deep
小题11:
A.unreliableB.impracticalC.unpreparedD.inaccurate
小题12:
A.fixB.checkC.repairD.lay
小题13:
A.sworeB.addedC.repliedD.concluded
小题14:
A.pencilB.forkC.boxD.cake
小题15:
A.distributedB.convertedC.appliedD.attached
小题16:
A.shapesB.sizesC.functionsD.models
小题17:
A.looseB.blankC.bareD.incomplete
小题18:
A.besideB.beforeC.belowD.behind
小题19:
A.sickB.hungryC.hotD.thirsty
小题20:
A.considerB.withdrawC.makeD.resist