砂地基用容积不小于200cm3时,宜采用( )取样。A.环刀法B.灌砂法C.蜡封法

题型:单项选择题

问题:

砂地基用容积不小于200cm3时,宜采用( )取样。

A.环刀法
B.灌砂法
C.蜡封法
D.灌水法

考点:试验员试验员
题型:单项选择题

若点M(1-a,a)在第四象限,则a的取值范围是______.

题型:单项选择题

某投资者欲投资购买某普通股股票,已知该种股票刚刚支付的每股股利为1.2元,以后的股利每年以2%的速度增长,投资者持有3年后以每股15元的价格出售,投资者要求的必要收益率为6%,则该股票的每股市价不超过( )元时,投资者才会购买。 已知:(PV6%,1=0.9434,PV6%,2=0.8900,PV6%,3=0.8396,PV6%,4=0.7921)

A.15.93

B.15.86

C.30.6

D.20.8

题型:单项选择题

阅读下面短文,掌握其大意, 然后从各题所给的四个选项中,选出最佳选项。

My father brought home a sailboat when I was ten, and almost each Sunday in summers we would go sailing. Dad was quite skilled in sailing, but not good at      . As for me, I     both before twelve because of living close to Lake Ontario.

The last time Dad and I set sail together is really      . It was a perfect weekend after I graduated from university. I came home and     Dad to go sailing. Out we set soon on the     lake. Dad hadn’t sailed for years, but everything     well with the tiller(舵柄)in his hands.

When we were in the middle of the lake, a      wind came all of a sudden. The boat was hit     . Dad was always at his best in any    , but at this moment he     .

“John!    !” he shouted in a trembling voice, with the tiller still in his hands.

In my memory he could fix any    . He was the one I always     for strength and security. Before I could respond, a      of water got into the boat. I rushed to the tiller     it was too late. Another huge wall of water     the boat in a minute. We were thrown into the water, and Dad was struggling aimlessly. At that moment, I felt fiercely     of him.

I swam to Dad     and assisted him in climbing onto the hull(船壳)of the boat. Upon sitting on the hull, Dad was a little awkward about his flash of      . “It’s all right, Dad. We are safe now,” I comforted him.

That was the first time Dad had counted on me in a moment of emergency. More importantly, I found it was my turn to start     for my father.

小题1:  

A.boating

B.running

C.swimming

D.teaching小题2:  

A.enjoyed

B.desired

C.hated

D.learned小题3:  

A.unforgivable

B.unforgettable

C.cheerful

D.regretful小题4:  

A.sent

B.ordered

C.invited

D.allowed小题5:  

A.calm

B.icy

C.stormy

D.thundery小题6:  

A.finished

B.went

C.seemed

D.sounded小题7:  

A.strong

B.gentle

C.cold

D.hot小题8:  

A.repeatedly

B.lightly

C.hardly

D.violently小题9:  

A.danger

B.place

C.sport

D.job小题10: 

A.suffered

B.fell

C.froze

D.withdrew小题11: 

A.look

B.Help

C.Run

D.Jump小题12: 

A.problem

B.relationship

C.machine

D.boat小题13: 

A.turned to

B.lived with

C.argued with

D.objected to小题14: 

A.fountain

B.stream

C.shower

D.wave小题15: 

A.if

B.for

C.after

D.but小题16: 

A.got through

B.poured into

C.turned over

D.lifted up小题17: 

A.ashamed

B.protective

C.tired

D.afraid小题18: 

A.hopelessly

B.quickly

C.slowly

D.helplessly小题19: 

A.pain

B.anger

C.fear

D.shame小题20: 

A.making up

B.getting ready

C.paying off

D.looking out

题型:单项选择题

肿瘤可划分为五个阶段,其中T代表()

A.癌前阶段 

B.原位癌 

C.浸润癌 

D.局部淋巴转移 

E.远处播散 

题型:单项选择题

关于氟乙酰胺中毒机制,不正确的是()。

A.主要机制为阻断中枢γ-氨基丁酸(GABA.受体

B.主要机制为生成氟乙酸后生成氟柠檬酸,抑制乌头酸酶活性

C.氟化物能抑制血中胆碱酯酶,出现类似有机磷中毒症状

D.氟还能与血红蛋白结合生成氟血红蛋白

E.直接刺激神经及肌肉系统致痉挛抽搐

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