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：
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
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
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=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
- 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
- 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：
- 下面哪个图形是分流阀的图形符号： A: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201902/4a427ac6ca3a451d88b23ac3bd534502.png" /> B: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201902/bef6c57a0c1c4d6bbfc50082f7edfe14.png" /> C: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201902/750259c8aa1c4efdb338873df39ffe24.png" /> D: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201902/5d511af88d8349f1bcf5e8ae6d7b1d09.png" />
- 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"/>