用铜、铝制成的两根导线,长度和粗细都相同,将它们并联后接到某电路中,则通过铜线的

题型:填空题

问题:

用铜、铝制成的两根导线,长度和粗细都相同,将它们并联后接到某电路中,则通过铜线的电流______(选填“大于“小于“或“等于“)通过铝线的电流.

考点:欧姆定律及其应用影响电阻大小的因素
题型:填空题

一年级有96名学生,二年级学生的人数比一年级的2倍还多17人,三年级学生的人数是一年级的3倍。

(1)二年级有多少人?

(2)三年级有男生146人,女生有多少人?

题型:填空题
将面积为0.50 m2的线圈放在磁感应强度为2.0×10-3 T的匀强磁场中,线圈平面与磁场方向垂直,则穿过线圈的磁通量是(   )
A.1.0×10-3 Wb

B.0.50×10-3 Wb

C.0.25×10-3 Wb

D.0

题型:填空题

如图所示,质量为30kg的小孩坐在10kg的雪橇上,大人用与水平方向成37°斜向上的大小为100N的拉力拉雪橇,使雪橇沿水平地面做匀速运动,(g=10N/kg,sin37°=0.6,cos37°=0.8)求:

(1)地面对雪橇的压力大小;

(2)雪橇与水平地面的动摩擦因素的大小。

题型:填空题

王某涉嫌诈骗被公安机关逮捕。捕后第四天,侦查人员才对其进行讯问,发现王某患有严重的乙型肝炎,于是打电话告诉其妻,王某已被逮捕并需住院治病。问:侦查人员是否违反办案程序?按照《刑事诉讼法》的规定,侦查人员发现王某有乙型肝炎后应该如何处理?

题型:填空题
It was a quiet morning during the war. In a small valley, there was a little wooden building, which was an orphanage (孤儿院) that__16__ many young children who had lost their ___17__ in the war. Suddenly, a shell (炮弹) __18__ on the top of the orphanage’s building. Many children were ___19__. One little girl was badly hurt and bleeding. A runner was at once sent to  __20__medical help.
When the doctor arrived, he_21_ that the girl’s greatest need at the moment was blood. He immediately checked the records in the__22__ to find someone who had the same blood type as the girl’s. A nurse soon __23__the children that had the same blood type together and asked who would be __24__ to donate blood to the girl. The children looked shocked, and no one said a word. Again with __25____ eyes, the doctor pleaded (恳求). __26__ a boy slowly raised his hand.
When the doctor injected the needle, the boy began to cry. The doctor tried to _27__ him, but in vain. Even when the needle was _28__ , the little boy was still crying. After the blood was given to the wounded girl, her___29__ got better. Then the doctor came to the boy, "Does it hurt?" "No, but I was afraid of dying." The doctor was __30_! "Why did you think you would die? "With __31_ in his eyes the boy replied, "Because I thought you would take all of my __32__ to save her! "The doctor didn’t know what to say! Then he asked, "__33_you thought you were going to die, why did you__34__to give her your blood?" With tears streaming down, he said in a___35__ voice, "Because she is my friend and I love her." There is no greater love in the world!
小题1:
A.storedB.hidC.gainedD.housed
小题2:
A.neighborsB.friendsC.parentsD.teachers
小题3:
A.fellB.appearedC.jumpedD.flew
小题4:
A.ruinedB.woundedC.harmedD.lost
小题5:
A.operate onB.take overC.get aroundD.ask for
小题6:
A.introducedB.realizedC.predictedD.promised
小题7:
A.orphanageB.hospitalC.schoolD.store
小题8:
A.recognizedB.turnedC.gatheredD.assumed
小题9:
A.valuableB.willingC.regrettableD.useful
小题10:
A.anxiousB.curiousC.delightfulD.surprising
小题11:
A.immediatelyB.happilyC.finallyD.probably
小题12:
A.stopB.comfortC.interruptD.support
小题13:
A.disappearedB.PulledC.RemovedD.finished
小题14:
A.functionB.occasionC.positionD.condition
小题15:
A.shockedB.frightenedC.pleasedD.worried
小题16:
A.smilesB.puzzleC.hopeD.tears
小题17:
A.energyB.healthC.moneyD.blood
小题18:
A.IfB.SinceC.ThoughD.Unless
小题19:
A.expectB.wishC.agreeD.permit
小题20:
A.softB.strangeC.tiredD.embarrassed
更多题库