【单选题】
如图表示的是（ ）<img src="20190822/1566463498461239.jpg" title="1566463498461239.jpg" alt="1566463453(1).jpg"/>
①
直流电动机的转速开环控制系统
②
直流电动机的转速闭环控制系统
【单选题】
<img src=https://huaweicloudobs.ahjxjy.cn/00A5BAEC72D10E45116984F9926CC101.jpg title=8.jpg alt=8.jpg/>
①
<img src=https://huaweicloudobs.ahjxjy.cn/EA8F74838AD46962160219AB9EA44922.jpg title=8-1.jpg alt=8-1.jpg/>
②
<img src=https://huaweicloudobs.ahjxjy.cn/805DB553735B5DDA8A5CFD43A2014037.jpg title=8-2.jpg alt=8-2.jpg/>
③
<img src=https://huaweicloudobs.ahjxjy.cn/F94AB880E9F9879DECB8D2EE5EC80757.jpg title=8-3.jpg alt=8-3.jpg/>
④
<img src=https://huaweicloudobs.ahjxjy.cn/AF43F5845A142BE252C7D48D91C17637.jpg title=8-4.jpg alt=8-4.jpg/>
【单选题】
<img title=18.jpg alt=18.jpg src=https://huaweicloudobs.ahjxjy.cn/739A9F345A4172F89CEFB72D60823ACB.jpg/>
①
<img title=18-1.jpg alt=18-1.jpg src=https://huaweicloudobs.ahjxjy.cn/9ED34AA7223A1900CC602D0BDD681021.jpg/>
②
<img title=18-2.jpg alt=18-2.jpg src=https://huaweicloudobs.ahjxjy.cn/12581B039427A324CA61CB0C9519B889.jpg/>
③
<img title=18-3.jpg alt=18-3.jpg src=https://huaweicloudobs.ahjxjy.cn/5DD9AFA8E360123F3B98EC61D2A1A4DE.jpg/>
④
<img title=18-4.jpg alt=18-4.jpg src=https://huaweicloudobs.ahjxjy.cn/CCB836E4338F7473A38A7CC7386E2D96.jpg/>
【单选题】
<img title=7.jpg alt=7.jpg src=https://huaweicloudobs.ahjxjy.cn/CC37414489F0DF25B3602A8DDDFFEE9C.jpg/>
①
<img title=7-1.jpg alt=7-1.jpg src=https://huaweicloudobs.ahjxjy.cn/385561D134671668482DEEBF418AC3D0.jpg/>
②
<img title=7-2.jpg alt=7-2.jpg src=https://huaweicloudobs.ahjxjy.cn/070D33D9857905BE8E3E2B75642F2352.jpg/>
③
<img title=7-3.jpg alt=7-3.jpg src=https://huaweicloudobs.ahjxjy.cn/8C37F5828B6AB9971E565399C763E38C.jpg/>
④
<img title=7-4.jpg alt=7-4.jpg src=https://huaweicloudobs.ahjxjy.cn/20EA09D5BF1B642AF91DFB824A9D6521.jpg/>
【单选题】
<img title=4.jpg alt=4.jpg src=https://huaweicloudobs.ahjxjy.cn/F3B282122543FF60809CF214A9B6CFAF.jpg/>
①
<img title=4-1.jpg alt=4-1.jpg src=https://huaweicloudobs.ahjxjy.cn/170C2976211C8C52C077DF5BA6B6AF03.jpg/>
②
<img title=4-2.jpg alt=4-2.jpg src=https://huaweicloudobs.ahjxjy.cn/1A65846532323FC70FE22882F31C9F8A.jpg/>
③
<img title=4-3.jpg alt=4-3.jpg src=https://huaweicloudobs.ahjxjy.cn/BE1E7D2F6082DD4BD0355961CC7CBDE4.jpg/>
④
<img title=4-4.jpg alt=4-4.jpg src=https://huaweicloudobs.ahjxjy.cn/39BA32C11BF8FEEA302696554E62527B.jpg/>
【单选题】
<img src=https://huaweicloudobs.ahjxjy.cn/304595C1E9A2CB86F896AF264834164A.jpg title=4.jpg alt=4.jpg/>
①
<img src=https://huaweicloudobs.ahjxjy.cn/9F6653A219CE28B816E57DB43F1C227D.jpg title=4-1.jpg alt=4-1.jpg/>
②
<img src=https://huaweicloudobs.ahjxjy.cn/1C1D1E018658979EBAB88D18DABC7AE8.jpg title=4-2.jpg alt=4-2.jpg/>
③
<img src=https://huaweicloudobs.ahjxjy.cn/6227A5FD14860BE74EED4A7422B98AA4.jpg title=4-3.jpg alt=4-3.jpg/>
④
<img src=https://huaweicloudobs.ahjxjy.cn/0B6889EE668743FFA0CB839F5949729F.jpg title=4-4.jpg alt=4-4.jpg/>
【单选题】
<img title=9-C.jpg alt=9-C.jpg src=https://huaweicloudobs.ahjxjy.cn/514151A1CD09E8952277D1A3EEE721AA.jpg/>
①
<img title=9-1.jpg alt=9-1.jpg src=https://huaweicloudobs.ahjxjy.cn/BE5E4C71B172FAB681B99B8515C4478C.jpg/>
②
<img title=9-2.jpg alt=9-2.jpg src=https://huaweicloudobs.ahjxjy.cn/4C461456E28F8CD43E8FDC4A4A0EC312.jpg/>
③
<img title=9-3.jpg alt=9-3.jpg src=https://huaweicloudobs.ahjxjy.cn/2E99AB616D4CE5D737AF19CD5141E0D3.jpg/>
④
<img title=9-4.jpg alt=9-4.jpg src=https://huaweicloudobs.ahjxjy.cn/FDCB977ACA535D9D8A8E5541B392110B.jpg/>
【单选题】
<img title=15-A.jpg alt=15-A.jpg src=https://huaweicloudobs.ahjxjy.cn/580DAF0C74171197E487BBAEAC9C48AB.jpg/>
①
<img title=15-1.jpg alt=15-1.jpg src=https://huaweicloudobs.ahjxjy.cn/3085ABE1B4004682CCC1969C7F9C8ACD.jpg/>
②
<img title=15-2.jpg alt=15-2.jpg src=https://huaweicloudobs.ahjxjy.cn/94582E3C6B98E70CE4A62CDDF729CA5C.jpg/>
③
<img title=15-3.jpg alt=15-3.jpg src=https://huaweicloudobs.ahjxjy.cn/5398AD7ADE5956755348E9EBCAE7EC6C.jpg/>
④
<img title=15-4.jpg alt=15-4.jpg src=https://huaweicloudobs.ahjxjy.cn/00EE273CB70AA4D7AEB1B6BB02E8D0F6.jpg/>
【单选题】
<img src=https://huaweicloudobs.ahjxjy.cn/AE098540DFFDD366DE08AE8AAF4DBEF9.jpg title=12.jpg alt=12.jpg/>
①
<img src=https://huaweicloudobs.ahjxjy.cn/DD8A6D46B35BC192D3A3BE4CCE48F69D.jpg title=12-1.jpg alt=12-1.jpg/>
②
<img src=https://huaweicloudobs.ahjxjy.cn/8E00BD1E01E79EC2E322DD1C8EB30774.jpg title=12-2.jpg alt=12-2.jpg/>
③
<img src=https://huaweicloudobs.ahjxjy.cn/1D54D2AE59BA93267C7D9FA67D265CC0.jpg title=12-3.jpg alt=12-3.jpg/>
④
<img src=https://huaweicloudobs.ahjxjy.cn/EDC0229D9C05D7BDF77FFF0340064C7A.jpg title=12-4.jpg alt=12-4.jpg/>
【单选题】
<img title=5.jpg alt=5.jpg src=https://huaweicloudobs.ahjxjy.cn/7DF59A9B021F9BEA9EFC167FB8688FED.jpg/>
①
<img title=5-1.jpg alt=5-1.jpg src=https://huaweicloudobs.ahjxjy.cn/86562B106A242E1513AEC9E9EF375801.jpg/>
②
<img title=5-2.jpg alt=5-2.jpg src=https://huaweicloudobs.ahjxjy.cn/07FB6D81B3DA69FB5B6F8DC16421B30E.jpg/>
③
<img title=5-3.jpg alt=5-3.jpg src=https://huaweicloudobs.ahjxjy.cn/F59901A7503186E1D0D6C473C5CDDADA.jpg/>
④
<img title=5-4.jpg alt=5-4.jpg src=https://huaweicloudobs.ahjxjy.cn/AAC625829F024B6A70EE4DE8D503EC92.jpg/>
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