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听力原文: It seems so natural to put up an umbrella to keep the water off when it rains. But actually the umbrella was not invented as protection against rain, its first use was as a shade against the sun. Nobody knows who first invented it, but the umbrella was used in very ancient times. Probably the first to use it were the Chinese, way back in the eleventh century B. C. We know that the umbrella was used in ancient Egypt and Babylon as a sun shade. And there was a strange thing connected with its use: It becomes a symbol of honor and authority. In the Far East in ancient times, the umbrella was allowed to be used only by royalty or by those in high office. In Europe, the Greeks were the first to use the umbrella as a sunshade. And the umbrella was in common use in ancient Greece. But it is believed that the first persons in Europe to use the umbrella as a protection against the rain were the ancient Romans. During the Middle Age, the use of umbrella practically disappeared. Then it appeared again in Italy in the late sixteenth century. And again it was considered as a symbol of the power and authority. By 1680, the umbrella appeared in France, and later on in England. By the eighteenth century, the umbrella was used against rain throughout most of Europe. Umbrellas have not changed much in style. during all the time, though they have become much lighter in weight. It wasn't until the twentieth century that women's umbrellas began to be made, in a whole variety of colors. (33)
A.
In ancient China.
B.
In ancient Egypt.
C.
In ancient Greece.
D.
In ancient Rome.
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【单选题】以下关于编制土方开挖工程单价应注意的问题,表述正确的是______。
A.
挖掘机、装载机挖土定额是按挖装自然方拟定的,如挖装松土时,人工及挖装机械乘0.65调整系数
B.
推土机推土定额是按自然方拟定的,如推松土时,定额乘0.80调整系数
C.
平洞、斜井土方开挖定额中的通风机台时量,是按一个工作面长度300m以内考虑
D.
挖掘机、轮斗挖掘机或装载机挖装土自卸汽车运输各节,适用于Ⅳ类土
【单选题】What are three characteristics of the TCP protocol? (Choose three.)
A.
P协议的三个特征是什么?(选择三项)
B.
It uses a single SYN-ACK message to establish a connection.
C.
P协议使用单个SYN-ACK消息建立连接。
D.
The connection is established before data is transmitted.
E.
输数据之前建立连接。
F.
It ensures that all data is transmitted and received by the remote device.
G.
P协议确保远程设备发送和接收所有数据
H.
It supports significantly higher transmission speeds than UDP.
I.
P协议支持比UDP协议更高的传输速度。
J.
It requires applications to determine when data packets must be retransmitted. K. P协议需要应用程序确定何时必须重新传输数据包。 L. It uses separate SYN and ACK messages to establish a connection.
【单选题】Windows 10 中,U盘上被删除的文件 ________ 。
A.
可以通过“回收站”恢复
B.
被保存在硬盘上
C.
不可以通过“回收站”恢复
D.
被保存在内存中
【多选题】关于土方工程定额,下列说法正确的有______。
A.
土方定额的计量单位,除注明外,均按实方计算
B.
挖掘机、装载机挖土定额系按挖装实方拟定的,如挖装松土时,人工及挖装机械乘0.85调整系数
C.
推土机推土定额是按自然方拟定的,如推松土时,定额乘0.85调整系数
D.
土料损耗综合系数根据不同的施工方法和坝料按规定取值,使用时不再调整
E.
压实定额均按压实成品方计
【多选题】水利定额使用要求( )。
A.
材料定额中,未列明品种、规格的,可根据设计选定的品种、规格计算,定额数量应根据实际调整
B.
土方定额的计量单位,除注明外,均按自然方计算
C.
挖掘机、装载机挖土定额系按挖装自然方拟定的,如挖装松土时,人工及挖装机械乘0.85调整系数
D.
现浇混凝土定额已包含模板制作、安装、拆除、修整
E.
钢筋制作安装定额,不分部位、规格型号综合计算
【简答题】呼叫中心面对的是客户,强调的是服务。从管理的角度考察,呼叫中心是一个____。 A围绕客户采用CTI(计算机电话集成技术)建立起来的客户关照中心 B促进企业营销、市场开拓并为客户提供友好的交互式服务的管理与服务系统 C在客户与企业之间建立的一种数字的、实时的、互动的交流管理系统 D拥有大量客户信息的数据库
【判断题】柱中纵筋的净距不应大于50mm。( )
A.
正确
B.
错误
【简答题】如图1所示,等边△ABC中,AD是BC边上的中线,根据等腰三角形的“三线合一”特性,AD平分∠BAC,且AD⊥BC,则有∠BAD=30°, BD=CD= 1 2 AB .于是可得出结论“直角三角形中,30°角所对的直角边等于斜边的一半”. 请根据从上面材料中所得到的信息解答下列问题: (1)△ABC中,若∠A:∠B:∠C=1:2:3,AB=a,则BC=______; (2)如图2所示,在△ABC中...
【单选题】挖掘机、装载机挖土定额系按挖装自然方拟定的,如挖装松土时,人工及挖装机械乘以( )的调整系数
A.
0.75
B.
0.80
C.
0.85
D.
0.70
【单选题】挖掘机、装载机挖土定额系按挖装自然方拟定的,如挖装松土时, 人则工及挖装机械乘以( )系数。
A.
0.75
B.
0.85
C.
0.65
D.
0.95
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