举一反三
- F力对A点的力矩和对B点的力矩 。https://p.ananas.chaoxing.com/star3/origin/589af6d7affa0c4bbe76f50af76e4ed5.png
- F力对A点产生顺时针转动,要保持平衡,A点必有一个逆时针力偶与之平衡。https://p.ananas.chaoxing.com/star3/origin/589af6d7affa0c4bbe76f50af76e4ed5.png
- 以下说法正确的是 https://p.ananas.chaoxing.com/star3/origin/32620d45b840963fcfd2a9e499329436.png https://p.ananas.chaoxing.com/star3/origin/be2489a6491756903a1a67528363e754.png https://p.ananas.chaoxing.com/star3/origin/c5d98544629d58d5c134ed8bc9743922.png https://p.ananas.chaoxing.com/star3/origin/eef7c4f0c58f9f292270fbd5e9600bd3.png
- 使,,,的值为https://p.ananas.chaoxing.com/star3/origin/7a71315286a845cd71d58a43d172d70e.pnghttps://p.ananas.chaoxing.com/star3/origin/82992dfd55feeb0dbc3accfc460e8e6f.pnghttps://p.ananas.chaoxing.com/star3/origin/d072c844f7cfa56460a42ea3424f0622.pnghttps://p.ananas.chaoxing.com/star3/origin/d03cce0f654cef79e0f8e9e14f223092.png
- 设[imgwidth="71"height="25"src="https://p.ananas.chaoxing.com/star3/origin/75ffa9533e6ab79bc0cfb8fd5a03fb9e.png"],则[imgwidth="39"height="23"src="https://p.ananas.chaoxing.com/star3/origin/424d5c9d46833a5ab8942dcd75ce5a8c.png"]在[imgwidth="37"height="21"src="https://p.ananas.chaoxing.com/star3/origin/9ee84cb4b1771fa6c046eaa6c45bb946.png"]上的平均值为(). A: imgwidth="16"height="45"src="https://p.ananas.chaoxing.com/star3/origin/f163ea87a82b79497196f437c30b8320.png">; B: ; C: ; D: .
内容
- 0
https://p.ananas.chaoxing.com/star3/origin/b31898e8d988e836116efe3cba9a910f.pnghttps://p.ananas.chaoxing.com/star3/origin/fb8dc50d75c1b761d9389a77bc20b4fd.pnghttps://p.ananas.chaoxing.com/star3/origin/7e75cd17522334f54b2eaedb009dba9a.png
- 1
曲线[imgwidth="59"height="27"src="https://p.ananas.chaoxing.com/star3/origin/3cc99583084ffcc89a960073fcd99335.png"]与直线[imgwidth="77"height="41"src="https://p.ananas.chaoxing.com/star3/origin/9b130a364a2754b18314b4d1622ea3a4.png"]及[imgwidth="37"height="21"src="https://p.ananas.chaoxing.com/star3/origin/8951f704839e2c8e32609744580906d7.png"]所围成的区域的面积S(). A: imgwidth="37"height="41"src="https://p.ananas.chaoxing.com/star3/origin/cf2bafeed7198528d3b7c952a5092ab8.png" B: C: D:
- 2
计算定积分[imgwidth="105"height="37"src="https://p.ananas.chaoxing.com/star3/origin/553430e020fbf983c08eba0d45c261fe.png"]=(). A: imgwidth="17"height="41"src="https://p.ananas.chaoxing.com/star3/origin/0a0f7eea778c91dbc6fdfc2ace9758e7.png">; B: ; C: ; D: .
- 3
设是圆,则https://p.ananas.chaoxing.com/star3/origin/d8b5edc9a2457c461a3685877f8606ab.pnghttps://p.ananas.chaoxing.com/star3/origin/5f3c1256fa1597901980dc868dfb57f7.pnghttps://p.ananas.chaoxing.com/star3/origin/1932e2a8e9452d4d6f94177a0ca40384.pnghttps://p.ananas.chaoxing.com/star3/origin/5785decddcc5b175015fc7c46d4d8405.png
- 4
由曲线[imgwidth="53"height="24"src="https://p.ananas.chaoxing.com/star3/origin/db4fa8875f945a05a5a4e1267be38b73.png"]、[imgwidth="37"height="21"src="https://p.ananas.chaoxing.com/star3/origin/8951f704839e2c8e32609744580906d7.png"]和[imgwidth="37"height="19"src="https://p.ananas.chaoxing.com/star3/origin/e2a3aace4ad8b56317c5010b305a51ae.png"]围成的平面图形绕[imgwidth="15"height="17"src="https://p.ananas.chaoxing.com/star3/origin/b3048d8c2bbe74ff01f7d3c8915bfdef.png"]轴旋转一周所得旋转体的体积[imgwidth="28"height="19"src="https://p.ananas.chaoxing.com/star3/origin/c9d9123939953c49b1e9b6492e79f835.png"](). A: imgwidth="35"height="41"src="https://p.ananas.chaoxing.com/star3/origin/2d760dcf355fa1cf2500875442f19085.png">; B: ; C: ; D: .