下图是什么设备的图例符号<img src="https://file.icve.com.cn/file_doc_public/543/623/87C9BC459FA57D14EA10B925A53E8668.png" title="46be329b4e5bb38ba6355d2b3264cc73.png" alt="46be329b4e5bb38ba6355d2b3264cc73.png"/>

【单选题】

① <img src=https://huaweicloudobs.ahjxjy.cn/BC05BDA03EF5733BBAA56803D9998FB6.png title=18-1.png alt=18-1.png/>

② <img src=https://huaweicloudobs.ahjxjy.cn/6876CC1E9A777A9DD537587107D107DA.png title=18-2.png alt=18-2.png/>

③ <img src=https://huaweicloudobs.ahjxjy.cn/0207BCF62DEC9212C5EF2ACE59917AD4.png title=18-3.png alt=18-3.png/>

④ <img src=https://huaweicloudobs.ahjxjy.cn/EB747BBD6D645466833645300229398B.png title=18-4.png alt=18-4.png/>

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【单选题】

<imgdata-url="doc/a@6DB4CF5F9C66FD17BC71BB963B29A7B4.png"data-preview_url_ueditor="doc/a@6DB4CF5F9C66FD17BC71BB963B29A7B4.png"src="http://121.251.253.213/doc/a@6DB4CF5F9C66FD17BC71BB963B29A7B4.png/download?time=635997628381662088&token=1C6275C21B6D06966B67391CC3F19CC3&filename=png"/>

① <imgdata-url="doc/a@F410046D7922BA32E1663874BC2B5C36.png"data-preview_url_ueditor="doc/a@F410046D7922BA32E1663874BC2B5C36.png"src="http://121.251.253.213/doc/a@F410046D7922BA32E1663874BC2B5C36.png/download?time=635997628596318465&token=777D59C04A7A8D783EA1471DFB89335B&filename=png"/>

② <imgdata-url="doc/a@1AF2C5AB025EC26732409D751F8DD5F6.png"data-preview_url_ueditor="doc/a@1AF2C5AB025EC26732409D751F8DD5F6.png"src="http://121.251.253.213/doc/a@1AF2C5AB025EC26732409D751F8DD5F6.png/download?time=635997628730166700&token=3FB693A96149E486567C840289970469&filename=png"/>

③ <imgdata-url="doc/a@1CA14D32B72BD4002480622B3B6819F1.png"data-preview_url_ueditor="doc/a@1CA14D32B72BD4002480622B3B6819F1.png"src="http://121.251.253.213/doc/a@1CA14D32B72BD4002480622B3B6819F1.png/download?time=635997628831410878&token=E8904182AEE541F27BF648C05282E255&filename=png"/>

④ <imgdata-url="doc/a@CEF42F04E29737B84007F47A8DE4CF5D.png"data-preview_url_ueditor="doc/a@CEF42F04E29737B84007F47A8DE4CF5D.png"src="http://121.251.253.213/doc/a@CEF42F04E29737B84007F47A8DE4CF5D.png/download?time=635997628964479112&token=CF20CB3A5FB1F69385D3E2366AC1E712&filename=png"/>

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【单选题】

① <img src=https://huaweicloudobs.ahjxjy.cn/DF9B921C19783AF2158EED655F0D25D0.png title=15-1.png alt=15-1.png/>

② <img src=https://huaweicloudobs.ahjxjy.cn/181768E6E74ACFBC5CEAEE2D23A10716.png title=15-2.png alt=15-2.png/>

③ <img src=https://huaweicloudobs.ahjxjy.cn/D1AD6F6188FBBDB342BD70C8433D4EB3.png title=15-3.png alt=15-3.png/>

④ <img src=https://huaweicloudobs.ahjxjy.cn/F6F124EA10ADEA63E9F95E14597FC40A.png title=15-4.png alt=15-4.png/>

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【单选题】

① <img title=9-1.jpg alt=9-1.jpg src=https://huaweicloudobs.ahjxjy.cn/A506508B7D4B1301949069CEF073B997.jpg/>

② <img title=9-2.jpg alt=9-2.jpg src=https://huaweicloudobs.ahjxjy.cn/1598D265A269A52C2138FA2557296077.jpg/>

③ <img title=9-3.jpg alt=9-3.jpg src=https://huaweicloudobs.ahjxjy.cn/C81FDF39B48C0B88D599DEC9C063DAAE.jpg/>

④ <img title=9-4.jpg alt=9-4.jpg src=https://huaweicloudobs.ahjxjy.cn/ABC198F9282C0CE2A29ACBB0D6622606.jpg/>

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【单选题】

① <img src=https://huaweicloudobs.ahjxjy.cn/B9EB142053A357276D28789FFF7AE872.png title=22-1.png alt=22-1.png/>

② <img src=https://huaweicloudobs.ahjxjy.cn/F061F9ED537F2C47A7738BB7F35B74B0.png title=22-2.png alt=22-2.png/>

③ <img src=https://huaweicloudobs.ahjxjy.cn/923A02D6EC398881BD14B4C43C96F2A9.png title=22-3.png alt=22-3.png/>

④ <img src=https://huaweicloudobs.ahjxjy.cn/C41919C1D83DA4DC7EA7E0EE7B45DD81.png title=22-4.png alt=22-4.png/>

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【判断题】

① 正确

② 错误

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【单选题】

<imgdata-url="doc/a@CF364D682E7EDC3D6F4E30F2BB4F580C.png"data-preview_url_ueditor="doc/a@CF364D682E7EDC3D6F4E30F2BB4F580C.png"src="http://121.251.253.213/doc/a@CF364D682E7EDC3D6F4E30F2BB4F580C.png/download?time=635997629330923755&token=1279F1B02A815952B66C14C416407130&filename=png"/>

① <imgdata-url="doc/a@FD3BE4B9A603A28900BA1CE5A4917F8F.png"data-preview_url_ueditor="doc/a@FD3BE4B9A603A28900BA1CE5A4917F8F.png"src="http://121.251.253.213/doc/a@FD3BE4B9A603A28900BA1CE5A4917F8F.png/download?time=635997629504240060&token=541E9A5C2B0C3ED87051C8D3BDF24F82&filename=png"/>

② <imgdata-url="doc/a@7A41590BEFCFCBE74C6F7E89E7967805.png"data-preview_url_ueditor="doc/a@7A41590BEFCFCBE74C6F7E89E7967805.png"src="http://121.251.253.213/doc/a@7A41590BEFCFCBE74C6F7E89E7967805.png/download?time=635997629627012275&token=B43E29170C3B3757C96EB1A856117760&filename=png"/>

③ <imgdata-url="doc/a@99F8D6DB9EB3FB1C901B53915B0A099D.png"data-preview_url_ueditor="doc/a@99F8D6DB9EB3FB1C901B53915B0A099D.png"src="http://121.251.253.213/doc/a@99F8D6DB9EB3FB1C901B53915B0A099D.png/download?time=635997629743700480&token=080FC0D2FF79A92E265FCC56F38259B3&filename=png"/>

④ <imgdata-url="doc/a@827C3797B683CCCEE410F2ACE266DAAE.png"data-preview_url_ueditor="doc/a@827C3797B683CCCEE410F2ACE266DAAE.png"src="http://121.251.253.213/doc/a@827C3797B683CCCEE410F2ACE266DAAE.png/download?time=635997629843852656&token=89F3878D2896DF9EE9FFD429BD4960F7&filename=png"/>

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【单选题】

① <img src=https://huaweicloudobs.ahjxjy.cn/B8C99A43609F8FB1749EECFB6EB1F56F.png title=21-1.png alt=21-1.png/>

② <img src=https://huaweicloudobs.ahjxjy.cn/E5D35ADFF30EA183C23EAB9735C34708.png title=21-2.png alt=21-2.png/>

③ <img src=https://huaweicloudobs.ahjxjy.cn/F5C85A5FA439DFC0AB0D8AAE50B8D64E.png title=21-3.png alt=21-3.png/>

④ <img src=https://huaweicloudobs.ahjxjy.cn/A0DE3E28C6930FD85456F61967ED0404.png title=21-4.png alt=21-4.png/>

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【判断题】

下图纯度为弱调。<img src="https://file.icve.com.cn/file_doc_public/709/950/B14ED9E946B3B04F1A1F9812A16B1C05.jpg" title="IMG_0964.JPG" alt="IMG_0964.JPG"/>

① 正确

② 错误

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【单选题】

① <img src=https://huaweicloudobs.ahjxjy.cn/F0F647CE4250C02B1544F4018B747E23.png title=23-1.png alt=23-1.png/>

② <img src=https://huaweicloudobs.ahjxjy.cn/F0051CC3C5FC144719F7AA97A15D9C23.png title=23-2.png alt=23-2.png/>

③ <img src=https://huaweicloudobs.ahjxjy.cn/F4266F203501863186A8CC15D2A60FCF.png title=23-3.png alt=23-3.png/>

④ <img src=https://huaweicloudobs.ahjxjy.cn/EC2A862A80CE7575023CF0BEC3D96EE8.png title=23-4.png alt=23-4.png/>

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