客户用电需求呈现（）趋势
A.智能化
B.互动化
C.多样化
D.精简化
参考答案：A, B, C
—Try the cakes._______?
—Wonderful. They taste delicious.
A．What for
B．What do you reckon
C．What’s going on
D．What do you like
什么是有机溶剂沉淀法？影响其的因素有那些？
