如图,确定直线的方向,已知BA直线的方向为NE42°,则CB边的坐标方位角应为( )。
A: mg src="http://p.ananas.chaoxing.com/star3/origin/d269851546a7c24273976126d11d6d96.jpg"
B: 14°
C: 76°
D: 104°
E: 166°
A: mg src="http://p.ananas.chaoxing.com/star3/origin/d269851546a7c24273976126d11d6d96.jpg"
B: 14°
C: 76°
D: 104°
E: 166°
举一反三
- 如图,确定直线的方向,已知BA直线的方向角为NE42°,CB边的方向角为( )。 A: mg src="http://p.ananas.chaoxing.com/star3/origin/45e759427a6b8b34e2dae842e8c21dba.jpg">A.NW14° B: SE76° C: NE76° D: SE14°
- 确定直线的方向,已知BA直线的方向为为42°,∠ABC=62°,则BC边的象限角应为( ): A: A.NW14° B: SE76° C: NE76° D: SE14°
- 图示等直圆轴AB由AC和CB两段组成,若AC段的切变模量为G,CB段为刚性轴,则相对扭转角<img src="http://p.ananas.chaoxing.com/star3/origin/56a89b473ce7e624847e5ff047e6ba1d.jpg" />有四种答案<img src="http://p.ananas.chaoxing.com/star3/origin/36eb99677f2e0a7f3f0db1d380a0da85.png" /> A: <img src="http://p.ananas.chaoxing.com/star3/origin/db07e5da4130413215fde86c1d56244f.jpg" /> B: <img src="http://p.ananas.chaoxing.com/star3/origin/e54505c73180025d082603e94c176c94.jpg" /> C: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201811/ec2c47138dd3471481a4eeefa044032c.png" /> D: <img src="http://p.ananas.chaoxing.com/star3/origin/aabcaa3a7a41210a1eb33c2f1c63cd5e.jpg" />
- <img src="http://p.ananas.chaoxing.com/star3/origin/560b9590e4b040cfea1a582d.png"/> <img src="http://p.ananas.chaoxing.com/star3/origin/560b9591e4b040cfea1a582e.png"/> <img src="http://p.ananas.chaoxing.com/star3/origin/560b9593498ed981287fd9e9.png"/>(), <img src="http://p.ananas.chaoxing.com/star3/origin/560b9593498ed981287fd9ea.png"/>(); <img src="http://p.ananas.chaoxing.com/star3/origin/560b9593498ed981287fd9ec.png"/> <img src="http://p.ananas.chaoxing.com/star3/origin/560b9593e4b040cfea1a5830.png"/>(), <img src="http://p.ananas.chaoxing.com/star3/origin/560b9593498ed981287fd9ea.png"/>()
- 图示应力状态,按第三强度理论校核,强度条件为( )。<img src="http://p.ananas.chaoxing.com/star3/origin/dd3fe2c04248453f934a5bf078c2096b.png"/> A: <img src="http://p.ananas.chaoxing.com/star3/origin/008fe5632455993a70b7aa9bf29fb1ef.jpg" /> B: <img src="http://p.ananas.chaoxing.com/star3/origin/9ffd49637b4c58b1fa85151ed63de699.jpg" /> C: <img src="http://p.ananas.chaoxing.com/star3/origin/5b8e6c02b33bd63b6fd0f121449e26b0.jpg" /> D: <img src="http://p.ananas.chaoxing.com/star3/origin/4896125577fc13ab75d592f1f3511baa.jpg" />