A、i<sub>1sub>超前i<sub>2sub>60° B、i<sub>1sub>滞后i<sub>2sub>60° C、相位差无法判断
A、I<sub>csub>+I<sub>bsub>-I<sub>2sub>=0 B、I<sub>csub>-I<sub>bsub>+I<sub>2sub>=0 C、I<sub>csub>+I<sub>bsub>+I<sub>2sub>=0 D、I<sub>csub>-I<sub>bsub>-I<sub>2sub>=0
A、I<sub>1sub>-I<sub>2sub>+I<sub>3sub>=5A B、I<sub>1sub>-I<sub>2sub>+I<sub>3sub>=-5A C、-I<sub>1sub>+I<sub>2sub>-I<sub>3sub>=0 D、I<sub>1sub>+I<sub>2sub>+I<sub>3sub>=0
A、i=i<sub>1sub>+i<sub>2sub>+i<sub>3sub>+i<sub>4sub>=12 B、i=i<sub>1sub>×i<sub>2sub>×i<sub>3sub>×i<sub>4sub>=72 C、i=3(i<sub>1sub>+i<sub>2sub>+i<sub>3sub>)=48 D、不能求得
A、I<sub>1sub>-I<sub>2sub>-I<sub>3sub>-I<sub>4sub> + I<sub>5sub>=0 B、I<sub>1sub>-I<sub>2sub> + I<sub>3sub>-I<sub>4sub>-I<sub>5sub>=0 C、I<sub>1sub>-I<sub>2sub>+ I<sub>3sub> + I<sub>4sub> +I<sub>5sub>=0 D、I<sub>1sub>-I<sub>2sub> + I<sub>3sub>-I<sub>4sub> + I<sub>5sub>=0
A、β=I<sub>2sub>/I<sub>2esub> B、β=I<sub>2sub>/I<sub>1sub> C、β=I<sub>2sub>/I<sub>1esub> D、β=I<sub>2sub>/I<sub>0sub>
A、C<sub>isub>(消费)=500+0.8I<sub>isub>(收入) B、Q<sub>disub>(商品需求)=10+0.8I<sub>isub>(收入)+0.9P<sub>isub>(价格) C、Q<sub>sisub>(商品供给)=20+0.75P<sub>isub>(价格) D、Y<sub>isub>(产出量)=0.65K0.6<sub>isub>(资本)L0.4<sub>isub>(劳动)
A、电离能I<sub>1sub>越小的元素,它的金属性越强 B、第三周期ⅢA族元素的I<sub>1sub>大于ⅡA元素的I<sub>1sub> C、Li的I<sub>2sub>和I<sub>1sub>之差小于Be的I<sub>2sub>和I<sub>1sub>之差 D、N的I<sub>1sub>比C和O的I<sub>1sub>都要小
A、F<sub>2sub>>Cl<sub>2sub>>Br<sub>2sub>>I<sub>2sub> B、Br<sub>2sub>>I<sub>2sub>>F<sub>2sub>>Cl<sub>2sub> C、Cl<sub>2sub>>F<sub>2sub>>I<sub>2sub>>Br<sub>2sub> D、I<sub>2sub>>Br<sub>2sub>>Cl<sub>2sub>>F<sub>2sub>
A、Cl<sub>2sub>〉F<sub>2sub>〉Br<sub>2sub>〉I<sub>2sub> B、F<sub>2sub>〉Cl<sub>2sub>〉Br<sub>2sub>〉I<sub>2sub> C、I<sub>2sub>〉Br<sub>2sub>〉Cl<sub>2sub>〉F<sub>2sub> D、Br<sub>2sub>〉I<sub>2sub>〉F<sub>2sub>〉Cl<sub>2sub>