【正文】 r ning publicit y im plement implementation XI General Secr et ar y im port ant speech spir it of polit ical consciously, and t hought consciously, and action consciously and mission consciously, put lear ning XI General Secretary and pr ovincial Secr et ar y Wang Xiankui speech spir it as cur ent primar y polit ical t ask, t o m or e st rongly of att itude, and m or e powerf ul of m easur es, and more f ul of dr ive pr omot ed f orest t ransform at ion development, st ruggled t o ut of or est r ansformation development new, ensure as scheduled achieved f ul built f orest society of t arget. Today t he Count y f or convening t his Conference, is t o f uly im plement he ar rangement s of t he provincial, pref ectural, and is a m aj or polit ical t ask. Countywide each of t he part y members and cadres must earnest ly study, deeply under st and, enter into t he heart , done outside t he heart , of the line ar med wit h J ia, Secr et ar y of spir it and mind, practice, work, below, I XX pract ical st udy J ia Shuj i39。 ( ) 三 、 計算 題（共 40 分） 1． 計算 下 圖所示桁架的支座反力及 2 桿的軸力。 ( ) 14．有面積相等的正方形和圓形，比較兩圖形對形心軸慣性矩的大小，可知前者比后者大。 ( ) 12．結(jié)點角位移的數(shù) 目就等于結(jié)構(gòu)超靜定的次數(shù)。 ( ) 10．梁橫截面豎向線位移稱為撓度，橫截面繞中性軸轉(zhuǎn)過的角度稱為轉(zhuǎn)角。 ( ) 8．安全因素取值大于 1 的目的是為了使構(gòu)件具有足夠的安全儲備。 ( ) 6．平行于梁橫截面的內(nèi)力是剪力，作用面與梁橫截面垂直的內(nèi)力偶是彎矩。( ) 4．幾何不變體系是指在荷載作用下，不考慮材料的位移時，結(jié)構(gòu)的形狀和位置都不可能變化的結(jié)構(gòu)體系。 ( ) 2．力沿坐標軸方向上的分力是矢量，力在坐標軸上的投影是代數(shù)量。 A．任意移動 B．任意轉(zhuǎn)動 C．任意移動和轉(zhuǎn)動 D．既不能移動也不能轉(zhuǎn)動 二 、判斷題（每小題 2 分，共計 30 分。s import ant speech spir it wit h you. Awar eness, deepen t he Count y, Gener al Secr et ar y f ur t her clarif y the t ransform at ional development, XI J inping str essed t hat XXX has it s advant ages, also have t heir own boar ds , key t o f ocus on weaknesses, shor t swagger gr ams, yangchangbuduan, int egrat ed eff ect of policy m easur es t owar ds t he t ar get solid f orward. This im por tant statement f or us t o do a good job providing a dialectical t hinking and t he scientif ic method, fuly embodies t he dialectical unit y of subjective and object ive law. We m ust speak to t he spir it f or guidance, and f urt her deepen under st anding, t ar geted t o l ng Yang well, Hawk shelt ers make good short, r eleased in f ul development potent ial. 一 . . Pot ential and the big f ive short Board, t hat is, ecol gical envir onment, resour ces, water, economic development advant age advant age, advantage as policy overlap, cultur al enr ichment, and indust rial boards, insti utional weakness, shor t people short , shor t of funds and t alent . Fr om t he per spect ive of ecological envir onment , our egion as an import ant guarant ee of nat ional ecological saf ety, high f or est cover , wat er , air and soil environment al indicat or s, such as t he natur e, is t he development of green f ood and preser ving pension ideal places, forest carbon sinks and other indust ries. From t he per spect ive of the prior it y of characteristic r esources, wild blueberr y, Nort her n f orest r esour ces such as drugs, big snow, big wetlands, River and f orest tourism r esources, variet y, large reser ves of mineral r esources such as m olybdenum, lead and zinc, has t r anslat ed int o str ong material conditons for economic advantage. Economic development out of t he water, t otal m or e t han 16 bilon cubic meter s of sur face water r esources and hydroj unction project of development pr ospects。 A． 1M 圖和 PM 圖 B． 1M 圖和 1M 圖 C． PM 圖和 PM 圖 D．都不是 9．一個點在平面內(nèi)的自由度有 ( ) 個。 A．桿件的變形 B．多余約束力 C．結(jié)點 位移 D．支座位移 7．圖示單跨梁的傳遞系數(shù) ABC 是（ ）。 A．彈性階段 B．屈服階段 C．強化階段 D．頸縮階段 5．圖所示構(gòu)件為 T 形截面，其形心軸最有可能的是（ ）。 A． 3 B． 4 C． 5 D． 6 3．靜定結(jié)構(gòu)的幾何組成特征是 ( )。 r ecover able r eserves of high qualit y m iner al wat er r esources milon t ons, is t he base of rare natural and polution free mineral wat er . Seen f rom t he advantages of cult ur al enr ichment, wit h Nor thern cult ure, and Xianbei cult ur es, Or oqen cult ure and a number of cult ural r esour ces, r ock only f ound m or e t han 1000 paint ings, cult ural indust ry development has great potent ial. Fr om t he perspective of policy overlap advantage, wit h t he St at e For estr y Administ ration and t he provincial gover nment wo channels of policy t owar ds dir ect enjoyment of natural f orest protection program, Western development , r esource based cit ies sust ainable development and main f unct ion region const ruction nat ional policy planning. As long as we put these r esour ces to use and exploit t he advantages of good, could give guanghui, snow, cold r egion and black Glebe int o gold and silver , wil pr ovide str ong suppor t f or f orest development . ( In addit ion to J ia Shuji m entioned advantages, XX we have in agricult ur e, water conservancy and other unique r esources. Agricult ural r esour ces, m ilon m u of arable land t hroughout he Count y, da hinggan Ling was t he only predom inantly r ural administr ative dist rict s, green planting area of 850, 000 acr es. Wat er r esour ces, in a r iver over more t han 180, many r iver hydr opower developm ent pr oject conditons, r ich in t hree five Luo and 試卷代號： 2348 中央廣播電視大學(xué) 2020— 2020 學(xué)年度第二學(xué)期“開放專科”期末考試 建筑力學(xué) 試題 2020 年 7 月 一 、 單項 選擇題（每小題 3 分，共 計 30 分） 1．若剛體在二個力作用下處于平衡，則此二個力必 ( )。2020 lear ning im plement t o t ube m ain leaders topic seminar spir it counselling m at er ial 2020 learning im plement o tube main leaders t opic seminar spir it counselling m aterial M arch 7, XI Gener al Secretar y t o Ipr ovince delegat ion par ticipate in considered and published has im port ant speech, on XXX pr ovince people for China