【单选题】
<img src=https://huaweicloudobs.ahjxjy.cn/7413C1B64517657E3F16F261DCD43065.png title=6.png alt=6.png/>
①
<img src=https://huaweicloudobs.ahjxjy.cn/3DC336E99F6B05D5121C4799609038A6.png title=6-1.png alt=6-1.png/>
②
<img src=https://huaweicloudobs.ahjxjy.cn/DFE6D8E77AB81D11232A71A72277EAE8.png title=6-2.png alt=6-2.png/>
③
<img src=https://huaweicloudobs.ahjxjy.cn/9704BDFAC2973842B5B6FC2B31DC3370.png title=6-3.png alt=6-3.png/>
④
<img src=https://huaweicloudobs.ahjxjy.cn/5420335CBE5D51E57FD278CB999F97B7.png title=6-4.png alt=6-4.png/>
【单选题】
9-6 已知uc(0-)=2V,图示电容的运算阻抗是 ,附加电压源是 。<img src=https://huaweicloudobs.ahjxjy.cn/7377012CEB3B72CC33B8F6A4D8351FA6.jpg title=9-6-1.jpg alt=9-6-1.jpg width=157 height=96 style=width: 157px; height: 96px;/>
①
<img class=jc-formula data-tex=\frac { 2 }{ S } ,2S src=https://huaweicloudobs.ahjxjy.cn/D7FDCD8090D22B936D389AC4A52F9672.png style=vertical-align: middle;/>
②
<img class=jc-formula data-tex=2S,\frac { 2 }{ S } src=https://huaweicloudobs.ahjxjy.cn/E4A1435293BA1E2DEBD1C4D008ECBC8B.png style=vertical-align: middle;/>
③
<img class=jc-formula data-tex=2S,2S src=https://huaweicloudobs.ahjxjy.cn/F1A7487440D73851891F2CABBF7FEDA3.png style=vertical-align: middle;/>
④
<img class=jc-formula data-tex=\frac { 2 }{ S } ,\frac { 2 }{ S } src=https://huaweicloudobs.ahjxjy.cn/80D4820910B6AC671E836E42A65D7FEB.png style=vertical-align: middle;/>