搜题请搜索小程序“爱下问搜题”
问题 单项选择题

图A所示结构（EI=常数）的弯矩图如图B所示，则截面C的竖向位移Acv为（）。

A、A

B、B

C、C

D、D

答案

参考答案：A

解析：

取下图(A)所示的基本结构，作出单位荷载作用下的弯矩图M1图，又已知超静定梁的最后弯矩图如图(B)，由图乘法得：

[点评] 本题考察超静定结构的位移计算，注意选择合理的基本结构有利于图乘，考生可以选择简支梁作为基本结构进行求解。

单项选择题

臁疮症见创面色暗，黄水浸渍，患肢浮肿，纳食腹胀，便溏，面色萎黄。舌淡苔白腻。治宜选用：

A．三妙散合萆薢渗湿汤

B．参苓白术散合黄连解毒汤

C．补阳还五汤

D．三妙散合萆薢化毒汤

E．三妙散合参苓白术散
查看答案
单项选择题

Throughout the 19th century and into the 20th, citizens of the United States maintained a bias against big cities. Most lived on farms and in small towns and believed cities to be centres of (1) , crime, poverty and moral (2) Their distrust was caused, (3) , by a national ideology that (4) farming the greatest occupation and rural living (5) to urban living. This attitude (6) even as the number of urban dwellers increased and cities became an essential (7) of the national landscape. Gradually, economic reality overcame ideology. Thousands (8) the precarious (不稳定的) life on the farm for more secure and better paying jobs in the city. But when these people (9) from the countryside, they carried their fears and suspicions with them. These new urbanities, already convinced that cities were (10) with great problems, eagerly (11) the progressive reforms that promised to bring order out of the (12) of the city.

One of many reforms came (13) the area of public utilities. Water and sewerage systems were usually operated by (14) governments, but the gas and electric networks were privately owned. Reformers feared that the privately owned utility companies would (15) exorbitant (过渡的) rates for these essential services and (16) them only to people who could afford them. Some city and state governments responded by (17) the utility companies, but a number of cities began to supply these services themselves. (18) of these reforms argued that public ownership and regulation would (19) widespread access to these utilities and guarantee a (20) price.

16（）

A.distribute

B.deliver

C.transfer

D.transport
查看答案