
【名词&注释】
压缩机(compressor)、互联网(internet)、电动机(motor)、光通信、制冷剂用量
[单选题]通常空调风量的调整可以通过( )的变化来实现。
A. 压缩机
B. 制冷剂用量
C. 节流器截面大小
D. 电动机转速
查看答案&解析
举一反三:
[单选题]当前我国用户沿着使用的微信、手机在线阅读、手机支付属于()业务。
A. 语音短信
光通信
固定互联网
移动互联网
[单选题]A Next Generation Network(NGN) is a () network ,which is able to provide Telecomunication Services ti users and to make use of multiple broadband, QoS-enable transport technologies and in which service-related functions are (下题选择) of the underlying transport-related technologies.
A. ISDN
B. ATM
C. circuit-based
D. packet-based
本文链接:https://www.zhukaozhuanjia.com/download/q5k337.html