更多“一船以速率v<sub>1</sub>＝30km·h<sup>-1</sup>沿直线向东行驶，另一小艇在其前方以速率v<sub>2</sub>＝40km·h<sup>-1</sup>沿直线向北行驶，问在船上看小艇的速度为何？在艇上看船的速度又为何？”相关的问题
A、V<sub>1sub>与V<sub>4sub>导通，V<sub>2sub>与V<sub>3sub>关断 B、V<sub>1sub>常通，V<sub>2sub>常断，V<sub>3sub>与V<sub>4sub>交替通断 C、V<sub>1sub>与V<sub>4sub>关断，V<sub>2sub>与V<sub>3sub>导通 D、V<sub>1sub>常断，V<sub>2sub>常通，V<sub>3sub>与V<sub>4sub>交替通断
A、V<sub>1sub>与V<sub>4sub>导通，V<sub>2sub>与V<sub>3sub>关断 B、V<sub>1sub>常通，V<sub>2sub>常断，V<sub>3sub>与V<sub>4sub>交替通断 C、V<sub>1sub>与V<sub>4sub>关断，V<sub>2sub>与V<sub>3sub>导通 D、V<sub>1sub>常断，V<sub>2sub>常通，V<sub>3sub>与V<sub>4sub>交替通断
A、V<sub>1sub>=V<sub>2sub>-V<sub>3sub>+V<sub>4sub> B、V<sub>2sub>=V<sub>1sub>-V<sub>3sub>+V<sub>4sub> C、V<sub>1sub>=V<sub>3sub>-V<sub>2sub>+V<sub>4sub> D、V<sub>1sub>=V<sub>3sub>-V<sub>4sub>+V<sub>2sub>
A、V<sub>1sub>、V<sub>2sub>、V<sub>3sub> B、V<sub>3sub>、V<sub>4sub>、V<sub>5sub> C、V<sub>6sub>、I、aVL D、V<sub>1sub>～V<sub>4sub> E、V<sub>1sub>～V<sub>6sub>、I、aVL
A、v<sub>1sub>＞v<sub>1sub>＞v<sub>3sub> B、a<sub>1sub>＞a<sub>2sub>＞a<sub>3sub> C、T<sub>1sub>＜T<sub>2sub>＜T<sub>3sub> D、F<sub>1sub>=F<sub>2sub>=F<sub>3sub>
A、v<sub>1sub>=v<sub>2sub>=v B、v<sub>1sub>>v>v<sub>2sub> C、v<sub>1sub><v<v<sub>2 D、v>v<sub>1sub>>v<sub>2sub>v<v<sub>
A、V<sub>1sub>＞V<sub>2sub> B、V<sub>1sub>＝V<sub>2sub> C、V<sub>1sub>＜V<sub>2sub> D、V<sub>1sub>≤V<sub>2sub>
客服
TOP
查看正确答案
