重物减速向下运动，关于绳内动拉力Fd有 。http://image.zhihuishu.com/zhs/onlineexam/ueditor/201705/b0e28218132b42eeb89eb8401327418f.jpg
举一反三
- 重物减速向下运动，关于绳内动张力Fd有以下四种答案，正确的是()。http://image.zhihuishu.com/zhs/onlineexam/ueditor/201811/9d581b006e444596ae2e7349f5422d5f.png
- 重物减速向下运动，关于绳内动张力Fd有（ ）。e93c5a3f23ab8a33d1a592e9ba1f23cf
- 重物减速向下运动，关于绳内动张力Fd有以下四种答案，正确的是（）。http://...ae2e7349f5422d5f.png
- 机构运动简图中移动副的表示方法为（ ）。 A: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201705/dc7906d4abaf4ab3a8dbf945b886f347.jpg"> B: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201705/7c42a1c2c5d14c72a0f9dec5e05d3583.jpg"> C: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201705/b00d698699ba4c3bbc6c0d588835f8fe.jpg">
- 当_____时，大气气团处于稳定状态。 A: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201705/cfd65918697d4e5aac32ffa652eeeb44.png"> B: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201705/3627620c7b20481c9fd4d9816cbe61d3.png"> C: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201705/da408a1038da41b2a6f4022dd469857f.png"> D: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201705/50437c56e4e340e59d42b59bc26d9802.png">