Small puters need small amount of power, means you use less electricity.
A. what
B. that
C. which
D. as
网友回答
A. what
B. that
(答案→)C. which
D. as
解析：as和which都可以引导非限制性定语从句，指代前面整句话的内容。本题只需要在C、D两项中选择。as引导非限制性定语从句，并在从句中作主语时，其后面的谓语动词一般是连系动词。如果从句谓语动词是行为动词，则必须用which。