图中用电压表能测量出电灯L1两端的电压的是 :
答案：C
测量出电灯L1两端的电压，电压表与其并联，所以C对。
I don’t _________ the price, as long as the house is in good condition.
A．look up
B．care about
C．take care of
D．take a look at
经济效果评价指标可分为几类？他们各包括哪些具体方法？
