装载机柴油机运转但整机不能行驶的原因可能是()。 A.未挂上档 B.未解除手制动 C

题型:多项选择题

问题:

装载机柴油机运转但整机不能行驶的原因可能是()。

A.未挂上档

B.未解除手制动

C.传动系统油液太少

D.变速箱油压过低

E.变矩器故障

F.变速箱离合器或传动件损坏

考点:工程机械修理工工程机械修理工(综合练习)工程机械修理工(综合练习)题库
题型:多项选择题
When I was nine years old, I used to go to the post office with my mother, to send greeting cards to my aunt in Singapore. To me, these trips were really       memories. And receiving mail through a mailbox outside our gate was just as exciting.
My small hands could      get the mail without using a key! I could never       to see how much I was getting. Oh, a letter! From Singapore! I would run back home and show it to my      . When there was a letter for me, I wouldn’t run—I would open it right there.
After my family moved back to Singapore, I        going to the post office. Years later, my company sent me to Shanghai, and the post office found me again. Two years ago I celebrated my      with five friends on top of the mountain in Longsheng, China. At sunrise we       up to enjoy a beautiful view from the mountain top. Later in the afternoon, as we were going       the mountain and returning from the sunrise viewing place, a small     caught our attention. It only sold noodles, coffee and had a China       sign.
We asked the owner if she could really send mail. She happily said yes. It seemed hard to believe       we were at the highest point of the mountain. I picked one postcard out and asked my friends to write        a birthday note. We bought a stamp, wrote some notes and gave the shop owner the postcard. Three weeks later, I arrived home and      my mailbox. Hello, postcard! I broke into a big smile.
That birthday postcard attracted me again to the post office. I had      the post office all these years. Today I      send postcards to friends. And every time I am at the post office buying stamps, I cannot help but smile—how one postcard will make its way across the world and brighten up someone’s day.
小题1:
A.badB.poorC.goodD.short
小题2:
A.easilyB.simplyC.hardlyD.specially
小题3:
A.weighB.waitC.getD.plan
小题4:
A.friendB.auntC.motherD.owner
小题5:
A.enjoyedB.stoppedC.hatedD.considered
小题6:
A.weddingB.returnC.successD.birthday
小题7:
A.brokeB.wokeC.grewD.stood
小题8:
A.aroundB.overC.upD.down
小题9:
A.bankB.hospitalC.shopD.river
小题10:
A.TrafficB.LifeC.PoliceD.Post
小题11:
A.becauseB.thoughC.whileD.when
小题12:
A.himB.meC.herD.them
小题13:
A.boughtB.repairedC.paintedD.opened
小题14:
A.missedB.influencedC.studiedD.visited
小题15:
A.justB.seldomC.stillD.never
题型:多项选择题

为了改善居民住房条件,某市计划用两年的时间,将城镇居民的住房面积由现在的人均约为10m2提高到12.1m2,若每年的年增长率相同,则年增长率为______.

题型:多项选择题

急性胰腺炎时,淀粉酶的改变下列哪项正确()

A.尿淀粉酶增高迟于血清淀粉酶

B.血清脂肪酶升高较血清淀粉酶早

C.尿淀粉酶测定值如>300U(索氏法)有诊断意义

D.急性坏死性胰腺炎,尿淀粉酶不一定增高

E.尿淀粉酶的高低与病变轻重不一定成正比

题型:多项选择题

高血容量综合征仅见于()

A.发热期

B.低血压休克期

C.少尿期

D.多尿期

E.恢复期

题型:多项选择题

从茎、叶上产生的根,称为()。

A、侧根

B、主根

C、定根

D、不定根

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