题目内容
Henry Ford was the first one to build cars which were fast, reliable(可靠的)and cheap. He was able to sell millions of them because he "mass-produced" them, that is, he made a great many cars of exactly the same type. Henry Ford's father had hoped his son would become a farmer, but the young man did not like the idea and went to Detroit where he worked as a mechanic.
By the time he was twenty-nine, in 1892, he had built his first car. The first "Massproduced" car in the world, The famous "Model T", appeared in 1908 five years after Henry had started his great Ford Motor's time, massproduction techniques have become common in industry and have reduced the price of a great many products which otherwise would be very expensive.
The passage mainly tells us ______.
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C1=C2=1.2m，α1x=α1y=0.3m，h0=0.9m，ft=1.5MPa时，同柱冲切承载力与______项值接近。
某单层单跨排架及支撑如图所示，柱顶与横梁铰接，柱底与基础刚接，柱高6000mm，采用 HN500×200×10×16，A=11420mm2，Ix=4.78×108mm4，ix=205mm，钢材牌号Q235-B，在排架侧边有一支撑柱，承受排架柱顶水平力，起排架的支撑作用，不承受其他荷载，支撑柱截面从可供货规格中选取，见下表。如此排架按强支撑考虑，其支撑柱截面应为______；按弱支撑考虑，其支撑柱截面应为 ______。此时，排架柱按稳定性计算的承载力N分别为______kN、______kN。
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
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。
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