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A．She's taking a bus.B．She's walking on a street.C．She's on a plane.D．She's taking a ta
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如图所示的承重墙梁，各部分尺寸见下表，托梁混凝土强度等级为 C20，纵向受力钢筋采用HBB335，砖强度为MU10，水泥砂浆强度等级采用M5，荷载设计值Q1=23.8kN/m，Q2=116kN/m。
已知墙梁的计算跨度l0=6.05m，墙体计算高度hw=2.85m，则该构件可以按墙梁计算的洞口高度hh和宽度bh的限制值最接近下列______项数值。
The making of glass is a very old industry—at least 4,500 years old. Glass has many extraordinary qualities and it is often being used in new ways.
One of the most interesting new uses for glass is in telephone communication. Scientists have developed glass fibres as thin as human hair which are designed to carry light signals. When the light reaches the other end, it is first changed into electrical signals which are in turn changed into sound messages.
Called lightwave communication, the new system was used successfully in an experiment in Chicago in 1977. During the experiment, two glass fibres were able to carry 672 conversations at the same time. The lightwave cable, containing 144 glass fibres, is able to carry 50,000 conversations at the same time.
The lightwave communication system has two important advantages. First, the glass fibre cables are smaller and weigh less than copper cables. Second, they cost less.
Perhaps it can be said that telephone communication has entered the age of light.
According to the passage, people started to make glass ______.
VR创出个股历史最高值，是买入的警戒信号。 ()
在U公司2006年度财务报表审计的完成阶段，项目负责人决定编制审计差异调整表和试算平衡表，为此正在考虑下列问题。请代为做出正确的判断。
用重要性原则来衡量，核算误差可以分为建议调整的和不建议调整的两类，但无论注册会计师是否建议调整，都应编制相应的调整分录并进行分类汇总。()
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