某装配整体式单跨简支叠合梁，结构完全对称，计算跨度ι＝5.8m，净跨径ι＝5.8m，采用钢筋混凝土叠合梁和预制板方案，叠合梁截面如图4-2所示，梁宽b＝250mm，预制梁高h＝450mm，b＝500mm，h＝120mm，混凝土采用C30;叠合梁高h＝650mm，叠合层混凝土采用C35。受拉纵向钢筋采用HRB400级,箍筋采用HPB300级钢筋。施工阶段不加支撑。第一阶段预制梁,板及叠合层自重标准值q＝12kN／m，施工阶段活荷载标准值q＝10kN／m;第二阶段，因楼板的面层,吊顶等传给该梁的恒载标准值q＝8kN／m，使用阶段活载标准值q＝12kN／m。取a＝40mm。设计使用年限为50年，结构安全等级为二级。

施工阶段梁的最大内力设计值M(kN·m),V(kN)，与下列何项数值最为接近？

A:M＝119.5;V＝98.6 B:M＝119.5;V＝82.4 C:M＝109.4;V＝98.6 D:M＝109.4;V＝82,4

某双跨车间采用钢筋混凝土组合屋架，槽瓦檩条体系屋盖，带壁柱砖墙和独立砖柱(中柱)承重，如图6-7所示。已知在风荷载作用下的柱顶集中力设计值：F＝2.38kN，迎风面均布荷载设计值w＝2.45kN／m，背风面均布荷载设计值w＝1.52kN／m。结构安全等级为二级。

试问，A柱柱底的弯矩设计值M(kN·m),剪力设计值V(kN)，与下列何项数值最为接近？

A:M＝26.77;V＝11.81 B:M＝28.14;V＝15.75 C:M＝16.66;V＝11.81 D:M＝18.66;V＝15.75

某双跨车间采用钢筋混凝土组合屋架，槽瓦檩条体系屋盖，带壁柱砖墙和独立砖柱(中柱)承重，如图6-7所示。已知在风荷载作用下的柱顶集中力设计值：F＝2.38kN，迎风面均布荷载设计值w＝2.45kN／m，背风面均布荷载设计值w＝1.52kN／m。结构安全等级为二级。

试问，B柱柱底的弯矩设计值M(kN·m),剪力设计值V(kN)，与下列何项数值最为接近？

A:M＝7.87;V＝1.31 B:M＝8.72;V＝1.31 C:M＝13.35;V＝2.62 D:M＝15.74;V＝2.62

某一悬臂水池，壁高H＝1.5m，采用MU10烧结普通砖和M7.5水泥砂浆砌筑，如图6-9所示。水的荷载分项系数取1.2。砌体施工质量控制等级为B级，结构安全等级为二级。

试确定池壁底部的受弯承载力验算公式(M≤fW)，其左右端项，与下列何组数值最为接近？

A:6.75kN·m／m＜7.20kN·m／m B:5.63kN·m／m＜9.00kN·m／m C:6.75kN·m／m＜9.00kN·m／m D:5.63kN·m／m＜9.7kN·m／m

某砌体房屋采用墙下钢筋混凝土条形基础，基础尺寸如图6-12所示，墙体作用于基础顶面处的轴心的标准值为：永久作用F＝300kN／m，可变作用F＝136kN／m，其组合值系数为0.7，基底以上基础与土的平均重度为20kN／m。

试问，设计基础底板时采用的基础单位长度的最大剪力设计值V(kN),最大弯矩设计值M(kN·m)，与下列何项数值最为接近？

A:V＝224.3;M＝91.4 B:V＝219.3;M＝89.4 C:V＝224.3;M＝89.4 D:V＝219.3;M＝91.4

某钢筋混凝土挑梁埋置于T形截面的墙体中，尺寸如图14-10所示。挑梁截面尺寸bxh=240mmx300mm，采用C20混凝土。挑梁上,下墙厚均为240mm，采用MU10烧结普通砖，M5混合砂浆砌筑。楼板传给挑梁的荷载标准值为：恒载F=4.5kN，g=g=10kN／m;活荷载q=8.3N／m。挑梁自重为1.8kN／m，挑出部分自重为1.35kN／m。砌体施工质量控制等级B级，设计使用年限为50年，结构安全等级二级。墙体自重为19kN/m，荷载的基本组合由可变荷载控制。

假定在楼层挑梁上无门洞，楼层挑梁的承载力计算时，其最大弯矩设计值M(kN·m),最大剪力设计值V(kN)，与下列何项数值最为接近？

A:M=57.24;V=45.53 B:M=40.5;V=45.53 C:M=57.24;V=43.26 D:M=40.5;V=43.26

There is much discussion today about whether economic growth is desirable. At an earlier period, our desire for material wealth may have been justified. Now, however, this desire for more than we need is causing serious problems. Even though we have good intentions, we may be producing too much, too fast.
Those who criticize economic growth argue that we must slow down. They believe that society is approaching certain limits on growth. These include the fixed supply of natural resources, the possible negative effects of industry on the natural environment, and the continuing increase in the world’s population. As society reaches these limits, economic growth can no longer continue, and th9 quality of life will decrease.
People who want more economic growth, on the other hand, argue that even at the present growth rate there are still many poor people in the world. These proponents of economic growth believe that only more growth can create the capital needed to improve the quality of life in the world. Furthermore, they argue that only continued growth can provide the financial resources required to protect our natural surroudings from industrialization.
This debate over the desirability of continued economic growth is of vital importance to business and industry. If those who argue against economic growth are correct, the problems they mention cannot be ignored. To find a solution, economists and the business community must pay attention to these problems and continue discussing them with one another.

A:the contradiction between economists and the business community B:the present debate on economic growth C:the advantages and disadvantages of economic growth D:the importance of the debate on economic growth

Passage Three
There is much discussion today about whether economic growth is desirable. At an earlier period, our desire for material wealth may have been justified. Now, however, this desire for more than we need is causing serious problems. Even though we have good intentions, we may be producing too much, too fast.
Those who criticize economic growth argue that we must slow down. They believe that society is approaching certain limits on growth. These include the fixed supply of natural resources, the possible negative effects of industry on the natural environment, and the continuing inertease in the world’s population. As society reaches these limits, economic growth can no longer continue, and the quality of life will decrease.
People who want more economic growth, on the other hand, argue that even at the present growth rate there are still many poor people in the world. These proponents of economic growth believe that only more growth can create the capital needed to improve the quality of life in the world. Furthermore, they argue that only continued growth can provide the financial resources required to protect our natural surroudings from industrialization.
This debate over the desirability of continued economic growth is of vital importance to business and industry. If those who argue against economic growth are correct, the problems they mention cannot be ignored. To find a solution, economists and the business community must pay attention to these problems and continue discussing them with one another.

A:the contradiction between economists and the business community B:the present debate on economic growth C:the advantages and disadvantages of economic growth D:the importance of the debate on economic growth

Passage Three

A:the contradiction between economists and the business community B:the present debate on economic growth C:the advantages and disadvantages of economic growth D:the importance of the debate on economic growth