回油孔始终点调节式喷油泵当供油量增加时（）。A．供油提前角加_爱下问搜题

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问题单项选择题

回油孔始终点调节式喷油泵当供油量增加时（）。

A．供油提前角加大，供油持续角加大

B．供油提前角减小，供油持续角加大

C．供油提前角减小，供油持续有减小

D．供油提前角加大，供油持续角减小

答案

参考答案：A

选择题

“泰山不让土壤，故能成其大；河海不择细流，故能成其深。”其中包含的方法论启示是

A．联系具有普遍性

B．量变是质变的前提

C．要重视量的积累

D．要不失时机地促成飞跃

完形填空

完形填空。
Last Tuesday I took my two daughters, aged five and seven, to town by car. It began to rain _1_ so I decided I would leave the children in the _2_ before I rushed into a shop. I warned the girls not to _3_ anything and told them I would be back within a few_4_. Then I locked all the doors and _5_ them happily looking out of the window. I returned to the car in less than five minutes but the girls had 6_! I could hardly believe my _7_. The car doors were _8_ locked, the windows tightly shut and in the back seat _9_ only two coats. Being _10_, I ran to the corner of the street _11 there was no sign of them. I _12_ up to an old lady nearby and asked _13_ she had seen two small girls but she said "No" Feeling quite sick with _14_, I sat on the driver's seat, and tried to stop trembling. Suddenly, I _15 a merry laugh behind me. I got out of the car, ran round to _16_ the boot and there inside were two very red-faced and excited _17 . They had obviously pulled out the back seat, _18 behind it and then been unable to push the _19 forward again. With tears in my eyes, I leaned forward and _20_ their ears.
( )1. A. heavy ( )2. A. car ( )3. A. ask ( )4. A. hours ( )5. A. had ( )6. A. disappeared ( )7. A. ears ( )8. A. too ( )9. A. hanged ( )10. A. stupid ( )11. A. where ( )12. A. jumped ( )13. A. that ( )14. A. fear ( )15. A. felt ( )16. A. shut ( )17. A. child ( )18. A. climbed ( )19. A. window ( )20. A. hit	B. hard B. bus B. eat B. minutes B. made B. died B. words B. again B. put B. proud B. which B. rushed B. when B. happiness B. smelt B. repair B. boys B. flew B. door B. pulled	C. hardly C. house C. read C. seconds C. left C. quarrelled C. eyes C. already C. had C. frightened C. that C. drove C. whether C. excitement C. saw C. start C. women C. threw C. seat C. cut	D. big D. school D. touch D. days D. let D. cried D. brains D. still D. were D. pleased D. when D. flew D. how D. anger D. heard D. open D. girls D. landed D. boot D. bit