正确答案: D

电动机转速

题目：通常空调风量的调整可以通过（ ）的变化来实现。

解析：D

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举一反三的答案和解析：

[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。

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.

packet-based