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【单选题】
若10Mbps的CSMA/CD局域网的节点最大距离为2km,信号在媒体上的传播速度为2×108m/s,该网的最短帧长是( )。A.
100bit
B.
200bit
C.
300bit
D.
400bit
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举一反三
【单选题】Find out which of these are native plants and which are -------- .
A.
foreign
B.
exotic
C.
fresh
D.
strange
【单选题】In 1971, the government took control over part of the railroads when the National Passenger Corporation took over responsibility for all intercity passenger trains.
A.
Y
B.
N
C.
NG
【单选题】Before making any changes to your travel plan, _______ your family to find out which activities are most important to them.
A.
to consult
B.
consulting
C.
consult
D.
consulted
【简答题】病房常用的铺床方法有几种?简述其目的。
【单选题】In order to find out which lifeboat you are assigned, you should look at the _____.
A.
Certificate of Inspection
B.
Station Bill
C.
Ships Articles
D.
Fire Control Plan
【单选题】In order to find out which lifeboat you are assigned, you should look at the _____.
A.
fire control plan
B.
certificate of inspection
C.
muster list
D.
ships articles
【单选题】仔细阅读下列描述，并判别它是关于SDO哪个基本要素的描述？ “它使得开发工具或运行环境能够动态地或者静态地查看数据的属性，包括数据类型、关系和约束等，同时提供了一组与数据源无关的API。”
A.
元数据 Meta Data
B.
数据对象 Data Object
C.
数据图 Data Graph
D.
数据中介服务 Data Mediator Service
【单选题】仔细阅读下列描述，并判别它是关于SDO哪个基本要素的描述？“它使得开发工具或运行环境能够动态地或者静态地查看数据的属性，包括数据类型、关系和约束等，同时提供了一组与数据源无关的API。”
A.
数据对象 Data Object
B.
数据图 Data Graph
C.
元数据 Meta Data
D.
数据中介服务 Data Mediator Service
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