【单选题】
<img src=https://huaweicloudobs.ahjxjy.cn/3AE311886215CB1E39A331C140A7176F.png title=13-C.png alt=13-C.png/>
①
<img src=https://huaweicloudobs.ahjxjy.cn/43C2BDE325B05C7EA8780F3E956277D8.png title=13-1.png alt=13-1.png/>
②
<img src=https://huaweicloudobs.ahjxjy.cn/F0843830065BAB3E860C9FFBCD138A6A.png title=13-2.png alt=13-2.png/>
③
<img src=https://huaweicloudobs.ahjxjy.cn/40DFF33E4C79D3B11838102AB10EDFDD.png title=13-3.png alt=13-3.png/>
④
<img src=https://huaweicloudobs.ahjxjy.cn/1FD154F1F8179FD7D6A57AB7C194E4F3.png title=13-4.png alt=13-4.png/>
【单选题】
<img src=https://huaweicloudobs.ahjxjy.cn/1941F185E37F81602E2ED5128D7AA1C0.png title=21.png alt=21.png/>
①
<img src=https://huaweicloudobs.ahjxjy.cn/C53C77FC2E09FA39B76A7AE7721DDF7E.png title=21-1.png alt=21-1.png/>
②
<img src=https://huaweicloudobs.ahjxjy.cn/6B004047C8A4885F09E4E18DEE3EA921.png title=21-2.png alt=21-2.png/>
③
<img src=https://huaweicloudobs.ahjxjy.cn/69BFC56AC6226C5F1412574E19E7DA45.png title=21-3.png alt=21-3.png/>
④
<img src=https://huaweicloudobs.ahjxjy.cn/E56FC07DBB32E6A45B574EAF8C4B5EA6.png title=21-4.png alt=21-4.png/>
【简答题】
<img src="https://huaweicloudobs.ahjxjy.cn/1C15C678338B379303C998EB6D7A948A.png" title="1.png" alt="1.png"/>[填空]
【简答题】
<img src="https://huaweicloudobs.ahjxjy.cn/24DCE72966F1BADAA5C78A1AE2C5ACB3.png" style="" title="0.png"/><img src="https://huaweicloudobs.ahjxjy.cn/EB3E8AEF49931D09780ED32E12BDABAC.png" style="" title="1.png"/><img src="https://huaweicloudobs.ahjxjy.cn/F418A8EBF9E25BD02F6B1AFC183838D1.png" style="" title="3.png"/>[填空]
【单选题】
<img src=https://huaweicloudobs.ahjxjy.cn/55D08AAAE0A9E4C94D0804C1C5167E71.png title=4.png alt=4.png/>
①
<img src=https://huaweicloudobs.ahjxjy.cn/ECBB660518A092D770526171FF6E7504.png title=4-1.png alt=4-1.png/>
②
<img src=https://huaweicloudobs.ahjxjy.cn/315178D16F4C9553E725B1D5AF2B753C.png title=4-2.png alt=4-2.png/>
③
<img src=https://huaweicloudobs.ahjxjy.cn/30BE3DEE9DAD9D76EA230430A0794E48.png title=4-3.png alt=4-3.png/>
④
<img src=https://huaweicloudobs.ahjxjy.cn/7FBDC54DE7107C88FE390A31880E0023.png title=4-4.png alt=4-4.png/>
【判断题】
<img src=https://huaweicloudobs.ahjxjy.cn/56ACB780D789467592B5972B7C01432E.png style= title=1.png/><img src=https://huaweicloudobs.ahjxjy.cn/DB9D652AC0F0D5A2CDAEBA64EC696861.png title=2.png alt=2.png/><img src=https://huaweicloudobs.ahjxjy.cn/8F70418C3F8650C247E18DFCC54FC0D3.png title=3.png alt=3.png/>
①
正确
②
错误
【简答题】
<img src="https://huaweicloudobs.ahjxjy.cn/88FE88F0EE2C2E719AC98E20785E9585.png" style="" title="0.png"/><img src="https://huaweicloudobs.ahjxjy.cn/6C81997BE673D44D1BE1C96EE02BED7D.png" style="" title="4.png"/>[填空1]
【单选题】
<img src=https://huaweicloudobs.ahjxjy.cn/A4EA3A33F2FA06C1E9A0CFD9705ED7E6.png title=12.png alt=12.png/>
①
<img src=https://huaweicloudobs.ahjxjy.cn/4B0FAFCECF5F81FD99EB7D6F436AD5CD.png title=12-1.png alt=12-1.png/>
②
<img src=https://huaweicloudobs.ahjxjy.cn/8D9762C97D3E0E8BECBBF9CA1F516E7F.png title=12-2.png alt=12-2.png/>
③
<img src=https://huaweicloudobs.ahjxjy.cn/553795A293B51FCC35B3426934989597.png title=12-3.png alt=12-3.png/>
④
<img src=https://huaweicloudobs.ahjxjy.cn/0ECB1BAF111878448DD1D68AA18D9358.png title=12-4.png alt=12-4.png/>
【单选题】
1-6计算图1-6所示电路中负载吸收的功率。<img src=https://huaweicloudobs.ahjxjy.cn/4E31A023858FF1E4CE770CF0F2F350C5.png title=1-6.PNG alt=1-6.PNG/>
①
<img class=jc-formula data-tex=250W src=https://huaweicloudobs.ahjxjy.cn/71DB2ECD38A42CBFEAD1A73DE4D2CA22.png style=vertical-align: middle;/>
②
<img class=jc-formula data-tex=-250W src=https://huaweicloudobs.ahjxjy.cn/A67BDA90F74302B896B16CD79A7671D8.png style=vertical-align: middle;/>
③
<img class=jc-formula data-tex=90W src=https://huaweicloudobs.ahjxjy.cn/75DE63071556B28FA2849D93283BB238.png style=vertical-align: middle;/>
④
<img class=jc-formula data-tex=-90W src=https://huaweicloudobs.ahjxjy.cn/CDF8E7154995F4E47156DDD0F31D9D17.png style=vertical-align: middle;/>
【简答题】
<img src="https://huaweicloudobs.ahjxjy.cn/C1A767CEF7AF3AE8CCCEE08532EE4E62.png" title="1.png" alt="1.png"/>
