皮皮学,免费搜题
登录
搜题
【简答题】
In 1947, a devvice called the transistor was invernted in Bell Laboratories, the research and development arm of AT&T (ow Lucent Technologies). That invention helped to establish entire branches of industry, including consumer electronics, computing, and titans such as Sony and Microsoft. Now , the changes taking place in our optical technologies are so significant that they have been compared with the development of the transistor.// Optical fibers form a network that interconnects the globe. These fibers are used to transmit our phone calls, faxes, TV programs, e-mail, data and many other types of information. Future systems will provide mutiples of this capacity. with so many people being able to sare a single fiber, the charges for the indididual will drop drastically. In effect, we are pushing capacity towards infinity and dropping costs to close to zero.//
拍照语音搜题,微信中搜索"皮皮学"使用
参考答案:
参考解析:
知识点:
.
..
皮皮学刷刷变学霸
举一反三
【单选题】人体最主要的散热器官是
A.
B.
C.
消化道
D.
汗腺
E.
皮肤
【单选题】下列不属于非典型创业的是( ):
A.
务员创业
B.
业单位员工创业
C.
业员工创业
D.
学生创业
【简答题】测试函数结果 abs(-10)
【单选题】脂肪栓塞综合征患者, 症状和体征轻微,仅有低热,轻度心动过速和呼吸次数稍增加者属于
A.
临床型
B.
暴发型
C.
亚临床型
D.
完全型
E.
迟发型
【单选题】人体最主要的散热器官是
A.
B.
C.
消化道
D.
皮肤
E.
呼吸道
【单选题】人体最主要的散热器官是
A.
B.
C.
消化道
D.
皮肤
E.
汗腺
【单选题】下列不属于非典型创业的是()。
A.
公务员创业
B.
事业单位员工创业
C.
企业员工创业
D.
大学生创业
【单选题】What’s the chance of ________ a general election this year?
A.
there being
B.
there to be
C.
there be
D.
there going to be
【简答题】什么是金属材料的热处理?
【简答题】什么是金属材料的热处理?