如图所示,容器重4.2N,放在水平桌面上,容器上部是边长5cm的立方体,下部是边

题型:计算题

问题:

如图所示,容器重4.2N,放在水平桌面上,容器上部是边长5cm的立方体,下部是边长10cm的立方体,若向容器内注入1.1kg水,求:

(1)这个装着水的容器对桌面的压强

(2)容器底部受到水的压强

考点:压强的定义
题型:计算题
In the dining room of my grandfather’s house stood a massive grandfather clock. Meals in that dining room were a time for three    36  to become one. The table was always spread with    37   containing love as the main ingredient (成分). And that grandfather clock stood like an old family friend, watching over the    38   that was a part of our lives.
As a child, the old clock fascinated me. I    39  and listened to it during meals. Even more wonderful to me was my grandfather’s ritual (老习惯). He wound (上发条) that clock with a(n)    40   key carefully each day. I remember watching   41   my grandfather took the key from his pocket and opened the hidden door in the clock. He inserted the key and wound — not too much, nor too    42  . He never let that clock wind down and    43 . He showed us grandchildren how to open the door and let us each take    44    winding the key.
After my grandfather died, it was days after the funeral    45  I remembered the clock! The tears    46   freely when I entered the dining room. The clock stood there quiet.
Some time later, my grandmother gave me the key. The old house was   47 . No laughter over the dinner table, no ticking or chiming of the    48   — all was still. I took the key in my shaking hand and    49   the clock door. All of a sudden, I was a    50   again, watching my grandfather with his silver-white hair and blue eyes. He was there,    51   at me, at the secret of the clock's magic, at the key that held so much power.
I stood there,    52   in thought for a long time. Then slowly and    53   I inserted the key and wound the clock. It sprang to life. Tick-tock, tick-tock, life and chimes were breathed into the dining room, into the house and into my    54  . With the movement of the hands of the clock, my grandfather    55   again.
小题1:
A.persons B.generations C.families D.stages
小题2:
A.waterB.soup C.riceD.food
小题3:
A.embarrassmentB.sorrow C.laughter D.depression
小题4:
A.sang B.laughedC.ate D.watched
小题5:
A.bigB.special C.black D.ugly
小题6:
A.since B.unless C.as D.until
小题7:
A.littleB.fast C.high D.hard
小题8:
A.talk B.run C.breakD.stop
小题9:
A.turns B.troubleC.pains D.action
小题10:
A.once B.when C.before D.that
小题11:
A.exposed B.flowed C.expressed D.spread
小题12:
A.cold B.differentC.quiet D.full
小题13:
A.tableB.house C.door D.clock
小题14:
A.locked B.opened C.turnedD.closed
小题15:
A.man B.father C.child D.god
小题16:
A.winking B.shouting C.glaring D.glancing
小题17:
A.lost B.lived C.missed D.interrupted
小题18:
A.nervously B.excitedlyC.steadily D.carefully
小题19:
A.accountB.heart C.anxietyD.pocket
小题20:
A.died B.disappeared C.lived D.smiled
题型:计算题

血浆标本采集时,防止血液凝固应做到()。

A.用干燥注射器

B.将血液快速注入试管内

C.用干燥试管

D.用抗凝试管

E.用干燥针头

题型:计算题

当配电变压器三相输入电压不平衡率大于()时会对系统产生不良影响。

A.±5%

B.±3%

C.5%

D.3%

题型:计算题

关于细菌性肝脓肿的描述错误的是()

A.肝外伤时细菌直接感染

B.细菌沿胆道上行性感染

C.其他部位感染灶的细菌经血行感染至肝

D.脓肿内容物呈果酱样

E.能形成膈肌下脓肿

题型:计算题

掘进打眼工打眼前要做到的“三紧”、“二不要”是什么?

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