以下各分子中,所有原子都满足最外层为8电子结构的是 () A.H3O+ B.BF

题型:选择题

问题:

以下各分子中,所有原子都满足最外层为8电子结构的是   (     )

A.H3O+

B.BF3

C.PCl5

D.P4O6

考点:构成物质的粒子—分子、原子、离子元素周期律
题型:选择题

立井底装载信号工将操作台上钥匙()旋转,操作台“运行”灯亮后,操作过程为点动状态,完成规定的操作。

A.向左

B.向右

C.向前

D.向后

题型:选择题

Although it was very cold,            he went out without an overcoat.

A.but

B./

C.and

D.so

题型:选择题

一般较复杂的园林设计的程序可分为哪几个阶段?

题型:选择题
阅读下面短文,掌握其大意,然后从36—55各题所给的四个选项(A、B、C和D)中,选出最佳选项,并在答题卡上涂黑。
My own "truest" Christmas stands out from all the others, which is the one when the meaning of the day shone clearest.Recently divorced, I had no   36   and was on my way to the employment office.It was pouring, but I had no umbrella, for my old one had   37   apart, and I could not afford another one.
I got in a streetcar and there   38   the seat was an umbrella leaning with a silver handle  39with jewels.I had never seen anything so lovely.I   40   the handle and saw a name carved there.The   41_procedure would have been to   42   the umbrella to the conductor, while I   43   to take it with me and find the owner myself.
Then I   44   a telephone book for the name on the umbrella and got it.A lady answered my call and she was so   45   that I forgot I was looking for a job and went directly to her small house.There, she wanted to give me a(an)   46   , but her excitement at getting back this special possession was   47   that to have accepted money would have   48   something.
The next six months were   49  .I was able to get only temporary   50   here and there for a small salary.  51   , when reaching home, 1 made myself smile, pretending to be happy to meet my daughter Peggy.There, she opened the door for me and 52 herself in my arms, screaming and demanding that we decorate the tree immediately.But when I looked at the cold pans and cans in he cold little kitchen, misery   53   me.
Suddenly the doorbell rang, there stood a delivery man."This is a   54   ," I said, but he read the name on the parcels and they were for me.I looked for the name of the sender and found it was the lady.
Our dinner the night was the most delicious in my life.Then I put Peggy to bed and   55   her gifts up around the tree and a sweet peace flooded me like a blessing.
小题1:
A.hopeB.jobC.faithD.house
小题2:
A.tornB.dividedC.takenD.fallen
小题3:
A.downB.againstC.inD.over
小题4:
A.equippedB.armedC.decoratedD.filled
小题5:
A.examinedB.inspected C.investigated D.checked
小题6:
A.generalB.usualC.ordinaryD.regular
小题7:
A.turn inB.give inC.bring inD.take in
小题8:
A.hesitatedB.turned C.promisedD.determined
小题9:
A.searchedB.observedC.foundD.watched
小题10:A- thankful          B.excited        C.delighted          D.truthful
小题11:
A.rewardB.prizeC.award D.praise
小题12:
A.soB.evenC.everD.such
小题13:
A.changedB.spoiledC.helpedD.missed
小题14:
A.fortunateB.mercifulC.inspiringD.miserable
小题15:
A.employmentB.settlementC.fulfillmentD.disappointment
小题16:A- However          B.Therefore     C.Thus               D.Besides
小题17:
A.threwB.spreadC.putD.lost
小题18:
A.got overB.came overC.turned overD.knocked over
小题19:A.surprise           B, blessing       C.mistake            D.misfortune
小题20:
A.setB.broughtC.tookD.picked
题型:选择题

施工承包企业按经监理工程师依据合同和相关法规审批的施工质量计划组织施工,如导致工程质量问题,则责任由( )承担。

A.建设单位
B.监理单位
C.施工承包企业
D.监理单位和施工承包企业共同

更多题库