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喷射混凝土抗压强度试验试块的制作方法有______。
A．成型试验法、直接拉拔法
B．喷大板切割法、成型试验法
C．凿方切割法、成型试验法
D．喷大板切割法、凿方切割法
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中水处理系统中的隔栅设在隔栅井内时，其倾角应不小于（）。
A.30°
B.45°
C.60°
D.90°
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"New York City is not America. " That’s what American friends are sure to you when you arrive. "You must see Boston, visit Niagara Falls, go to Virginia, fly down to Florida, and so on; but first, of course, you will want. to see-New York. It is not the capital city of the United States(that is Washington, D.C. , where the Preisdent lives) or even the capital city of New York State(that is Albany), but many people call it ’the greatest city on earth’." The five parts, or boroughs, of New York City are Manhattan, Queen, Bronz, Richmond and Brooklyn. Although Manhattan is not all of New York, it is the heart of the city. It is an island, which is only about 13 miles long and 2 miles wide. From the air its shape looks like a long finger,and from the sea it’s just like the picture we all know. Those tall, straight buildings-the skyscrapers-packed so close together on that island of rock are sometimes seen in the distance through a veil of early morning mist. You have imagined it so often that now it’s difficult to believe this beautiful sight is real, and unless your heart is as hard as stone, excitement will make it beat a little faster. Perhaps "greatest", "tallest", "longest", "biggest", "brightest", are words you will find most often in the city guide books.
A．Manhattan is the center of New York City.B．New York City is made up of five parts.C．New York looks like a long finger from the air.D．Manhattan is an island.
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生石灰熟化的特点是()。A.体积收缩B.吸水C.大量放热D.放出大量气体
生石灰熟化的特点是()。 A.体积收缩 B.吸水 C.大量放热 D.放出大量气体
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A . 科技B . 工业C . 教育D . 创新
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To fight a noise by making more noise sounds strange, but that’s exactly what motor engineers are do...Which of the following gives a general idea of how the noise killing system works
A．By producing pressure waves going in the opposite direction.
B．By mixing high frequency sound waves with low frequency sound waves.
C．By mixing new sound waves with the noise and sending them out together.
D．By making copies of the unwanted sound waves and letting them out a little later.
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依法被剥夺政治权利的人编入居民小组，社区居委会应当对他进行（）。
A.监督和教育
B.监视居住
C.强制参加劳动
D.定期召集学习
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轨道道岔质量要求及允许偏差，尖轨跟部轨缝不大于（）毫米。
A、14
B、8
C、12
D、10
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钢网架结构总拼与安装时，中拼单元单跨拼接长度(单元长度<20m)允许偏差为( ) mm。A.－10．0B.＋10．
A.-10．0
B.+10．0
C.±10．0
D.10．0
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非上市公司在股份挂牌前应与证券登记结算机构签订证券登记服务协议，办理部分股份的集中登记。初始登记的股份，托管在推荐主办券商处。
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重要市政公用设施和关键性生产设备发生故障不属于消防部队抢险救援工作的范围。
A . 正确
B . 错误
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婚礼结束后，新娘应以（）的方式送别来宾。
A.服饰繁琐
B.夸张艳丽
C.高贵典雅
D.轻松舒适
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