更多“带传动是靠摩擦力来工作的。”相关的问题
第二审答辩状的重点主要在于针对（）进行有理有据的反驳，并阐明本方对第一审判决的认识和主张。
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融资租赁合同的租赁标的物瑕疵担保责任（）。
A．由出租人承担瑕疵担保责任
B．出租人不承担瑕疵担保责任
C．由承租人承担瑕疵担保责任
D．由双方当事人约定承担瑕疵担保责任
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造成房地产估值困难的主要因素是房地产的（）
A.长期性
B.异质性
C.低流动性
D.不可分性
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对ARDS的诊断和病情判断有重要意义的检查是（）。
A.血气分析
B.X线检查
C.血流动力学监测
D.呼吸功能监测
E.心电图检测
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圆盘形声源发出的超声波介于球面波与平面波之间，称之为（）。
A、柱面波
B、横波
C、纵波
D、活塞波
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He had studied hard, he would have been able to pass the exam.
A. He had studied harder
B. If only he studied more
C. Had he studied harder
D. When he studied more
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施工进度计划中的()，应与选定的施工方法和机械设备能力相适应。
A、施工质量B、施工速度C、施工技术D、施工进度
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EI Nino is the term used for the period when sea surface temperatures are above normal off the South American coast along the equatorial Pacific, sometimes called the Earth"s heartbeat, and is a dramatic but mysterious climate system that periodically rages across the Pacific. EI Nino means "the little boy" or "the Christ child" in Spanish, and is so called because its warm current is felt along coastal Peru and Ecuador around Christmas. But the local warming is just part of an intricate set of changes in the ocean and atmosphere across the tropical Pacific, which covers a third of the Earth"s circumference. Its intensity is such that it affects temperatures, storm tracks and rainfall around the world. Droughts in Africa and Australia, tropical storms in the Pacific, torrential rains along the Californian coast and lush greening of Peruvian deserts have all been ascribed to the whim of EI Nino. Until recently it has been returning about every three to five years. But recently it has become more frequent—for the first time on record it has returned for a fourth consecutive year—and at the same time a giant pool of unusually warm water has settled clown in the middle of the Pacific and is showing no signs of moving. Climatologists don"t yet know why, though some are saying these aberrations may signal a worldwide change in climate. The problem is that nobody really seems sure what causes the EI Nino to start up, and what makes some stronger than others. And this makes it particularly hard to explain why it has suddenly started behaving so differently. In the absence of EI Nino and its cold counterpart, La Nina, conditions in the tropical eastern Pacific are the opposite of those in the west: the east is cool and dry, while the west is hot and wet. In the east, it"s the winds and currents that keep things cool. It works like this. Strong, steady winds, called trade winds, blowing west across the Pacific drag the surface water along with them. The varying influence of the Earth"s rotation at different latitudes, known as the Coriolis effect, causes these surface winds and water to veer towards the poles, north in the northern hemisphere and south in the southern hemisphere. The surface water is replaced by colder water from deeper in the ocean in a process known as upwelling. The cold surface water in turn chills the air above it. This cold dense air cannot rise high enough for water vapor to condense into clouds. The dense air creates an area of high pressure so that the atmosphere over the equatorial eastern Pacific is essentially devoid of rainfall.
A．irregularities.B．destructions.C．frequencies.D．intensities.
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具根、茎、叶的桃树幼苗（）。
A．为孢子体，处于无性世代
B．为孢子体，处于有性世代
C．为配子体，处于无性世代
D．为配子体，处于有性世代
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若 A中有个m元素,B中有个n元素,则A×B中有 个元素 。
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1mg补佳乐贡献给体内()μgE2。
A、30
B、40
C、50
D、60
E、70
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变电站的综合分析要（）。
A.每周一次
B.两周一次
C.每月进行一次
D.半年一次
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时点间隔不相等的不连续时点数列求序时平均数,要将各间隔长度作为权数,对各相应时点的平均水平加权,应用加权算术平均法计算序时平均数。
A. 对B. 错
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inmarsat-b船站中的语音压缩编码采用APC方式APC称为（）
A.脉冲编码调制
B.自适应预测编码
C.高级多带激励编码
D.差错控制编码
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