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（ ）是指当每张外汇期货合约交易成交时，买卖双方均须依照各类合约的有关规定，缴纳一定金额的保证金

【参考答案】

原始保证金

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单项选择题
某公司计量测试中心对某铁路隧道出口段混凝土衬砌进行雷达检测,检测里程及测线布置:DK371+318.0-DK371+783.0（洞口）,共465m。地质雷达检测隧道衬砌质量时,测试中心工作人员需要掌握以下基本知识。（3）若衬砌背部回填不密实,地质雷达数据有（ ）的特征。
A.反射信号弱，图像均匀且反射界面不明显
B.反射信号强，图像变化杂乱
C.反射信号强，图像呈分散的月牙状
D.反射信号弱，图像不均
不定项选择
恰恰恰是模仿企鹅走路姿态而编的舞蹈，舞步可爱，步频较快，具有诙谐而花哨、俏皮而爽利的风格。
A．正确
B．错误
单项选择题
"...She was married to an officer in India,long ago India;and she had a life of physical adventure(冒险)as exciting as her poetry.Her husband could cross rivers using crocodiles(鳄鱼)as stepping stones.He died when she was only 39.Unwilling to exist without him,she took her life,leaving a son in England."
I stared at the paper,21?reading,couldn′t help thinking.
Crocodiles are lazy animals as a rule,but they can move like lightening when they want to.And they don′t mind hurrying?22?they′re hungry.There used to be lots in Indian rivers,living on fish mostly;but what′s a little fish for a fifteen-foot crocodile？They ate people,fisherman or anyone else delicious enough to get too near;women doing the?23,or children playing at the water′s
24.A hungry crocodile′s mouth?25?over a meal with a sound like a gunshot.A big fellow can?26?in a man in two bites(咬)。
That woman′s husband crossed rivers?27?from one crocodile′s back to the next.I believe it.It had to be done quickly before the creature could see what was happening.It wasn′t28?a brave,active man;and no doubt he improved with practice.He could never look?29while crossing.
The wife used to watch him--I felt sure of that.She lived?30?the adventure,the?31?excitement of it all.Their real life was with tigers,snakes...It′s no wonder she wrote?32poetry.
Then he died.I imagined how she felt.Was there another man?33?him in India,in the world?She was still young,hardly a sitting-room widow(寡妇)."I must?34,too."she said to herself.So she did what she felt she had to do.A?35?probably,to her head.
But her young son,their son?Was her love for him nothing compared to her husband?Well,what do you think?
第27题答案是
A.jumping
B.running
C.walking
D.marching
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