某单跨钢筋混凝土厂房，柱距为12m，在吊车梁上行驶两台重级工作制的软钩桥式吊车，起重量Q=50/10t，小车重Q=15t，吊车桥架跨度L=28m，最大轮压标准值P=470kN，一台吊车的轮压分布如图16-1所示。设计使用年限为50年，结构安全等级二级。

试问，由吊车横向水平荷载产生的吊车梁最大水平弯矩设计值M（kN·m），与下列何项数值最接近（）？

A.93

B.110

C.130

D.143

Many students do not like tostudy history(历史)．They say that there are (41) many names and dates to (42) ．But if we do not know about the (43) ，we can not understand the present well．For example，if we wish to know how men (44) to use fire，we have to know what men did (45) the past to travel at night or to keep themselves (46) in cold nights．Only a study of history will make US realize(意识到) (47) everything we do today is the result of what (48) people did in the past．

[A] subjects [B] matters [C] things

As we (49) history，we learn many interesting (50) ．History helps US understand our present life better．