图示为力反馈式二级喷嘴档板伺服结构简图，下列描述正确的是：http://image.zhihuishu.com/zhs/onlineexam/ueditor/201902/7a1aae223e3047bb840512a707adc565.png
举一反三
- 图示为力反馈式二级喷嘴档板伺服结构简图，下列描述正确的是：<img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201902/7a1aae223e3047bb840512a707adc565.png" /> A: 5号部件是反馈杆 B: 3号部件为档板 C: 6号部件是主阀芯 D: 4号部件是喷嘴
- 图示为力反馈式二级喷嘴档板伺服结构简图，下列描述正确的是：
- 图示为力反馈式二级喷嘴档板伺服结构简图，下列描述正确的是：[img=306x402]17d6061885ad1ef.png[/img] A: 5号部件是反馈杆 B: 3号部件为档板 C: 6号部件是主阀芯 D: 4号部件是喷嘴
- 已知串联支路为<img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201902/65b91bc067d14873a38d0c4675b53329.png"/> ， ，则其传递函数为（ ） A: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201902/8bc361d7b437451dac5c0c42c3213311.png"/> B: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201902/7db9751653e24eba9f152b6937c8c256.png"/> C: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201902/a4b7ab7e122b40068ce6b78635486bae.png"/> D: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201902/a6b34e5a8a764d5c9b78c725d7b77ed4.png"/>
- 已知<img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201902/43114282e941476ba93775909fb3f237.png"/>，用拉氏变换法求解微分方程<img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201902/0db291610cb64fa8ad46ae0bd15476b0.png"/> 的结果为（ ） A: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201902/29ff68f02bdd438bb2e16c2a6e1ec18b.png"/> B: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201902/0010c1593c9145a4b928548ab38cf426.png"/> C: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201902/1f562f2536584121b53c30e4db08df88.png"/> D: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201902/f593399cb630435192baa8b3e871b533.png"/>