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【单选题】
目前光纤通信中所使用的光波的波长区域是
A.
红外区
B.
远红外区
C.
紫外区
D.
近红外区
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【单选题】由波洛米尼设计的罗马圣卡罗教堂,室内几乎没有一条直线,装饰复杂,富丽堂皇,它是( )时期的典型代表建筑
A.
文艺复兴
B.
巴洛克
C.
洛可可
D.
罗马
【单选题】下列四项中不属于数据库系统的特点是( )
A.
数据共享
B.
数据完整性
C.
数据冗余度高
D.
数据独立性高
【简答题】简述电子商务的优势 (慕课-第一单元电子商务概述-第一讲电子商务概念)
【单选题】下列四项中不属于数据库系统特点的是()
A.
数据共享性高
B.
数据冗余度高
C.
数据独立性高
D.
数据完整性
【单选题】Which of the following statements represents the FIRST precaution to be taken prior to working on any installed electrical component _____.
A.
Wear rubber gloves and boots
B.
Use only approved non-conducting tools
C.
Ground the case of the machine before beginning any repairs
D.
Open the supply circuits and tag the switches
【简答题】Which of the following is not a reason to provide proper citation? A、To show our hard work and all of the research that we?ve done B、To plagiarize (using another person?s words or ideas without giving...
【简答题】简述电子商务的优势和劣势。
【判断题】热敏感性饲料调制时的温度低于谷物含量高的饲料
A.
正确
B.
错误
【简答题】简述电子商务的优势。A. (1)快速树立企业的良好形象(2)增加企业成本优势 (3)提高顾客的满意度与对顾客的服务水平 (4)提供更有效的售后服务
【单选题】The following are all the measures that companies have adopted to cope with the ageing workforce EXCEPT______.
A.
making places of work accommodate the needs of older workers
B.
using alumni networks to hire retired former employees
C.
encouraging former employees to work overseas
D.
granting more convenience in working hours to older workers
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