. Today, housework has been made much easier by electrical .A. facilitiesB. appliancesC. i

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A. facilities
(答案→)B. appliances
C. instruments
D. equipment
解析：electric appliances电器用具，facilities公用设备。equipment设备,装备，是集合名词，指“设备”的总称，只有当数形式。instrument仪器。