交警在公路执法查处货车违章超载时，遭到驾驶员黄某的辱骂，长达十几分钟，引发路人及其他

张华同学用托盘天平秤量苹果的质量，苹果应放在 _________ 盘中，向_________ 盘中添加砝码。

下列叙述不属于线性链表较之线性表顺序存储结构的优点的是( )。

A) 线性链表存储方式简单
B) 线性链表运算效率高
C) 线性链表的存储空间易于扩展
D) 线性链表便于存储空间的动态分配

根据《中国移动IP承载网工程验收规范》，在移动通信网络中VPN的中文名称是（）。

A.虚拟专用网

B.虚拟局域网

C.无线局域网

D.域名系统

对诊断胃肠破裂有意义的检查是

A．腹腔穿刺抽出不凝血

B．X线示膈下有游离气体

C．B超发现积液

D．血常规检查见白细胞计数升高

E．X线示肠道内气液平面

A local-area network (LAN) is a communications network that (125) a variety of devices and provides a (126) for information exchange among those devices. The scope of the LAN is small typically a single building or a cluster (丛) of buildings. The LAN is usually owned by the same organization that owns the (127) devices. The internal data rate of LAN is at least several Mb/s.
The basic of LAN communication is broadcasting. At each station, there is a transmitter/receiver that communicates over a (128) shared, By other stations. A transmission from any one station is (129) to and received by all other stations.

A．broadcast

B．cable

C．control

D．interconnects

E．internet

F．meander

G．means

H．medium

I．modem

J．output switch relay