锐角的集合可以写作
A: [img=52x59]1803d0504b4c6b5.jpg[/img]
B: [img=59x51]1803d05053f4c3c.jpg[/img]
C: [img=67x59]1803d0505c77d05.jpg[/img]
D: [img=60x27]1803d050659c176.jpg[/img]
A: [img=52x59]1803d0504b4c6b5.jpg[/img]
B: [img=59x51]1803d05053f4c3c.jpg[/img]
C: [img=67x59]1803d0505c77d05.jpg[/img]
D: [img=60x27]1803d050659c176.jpg[/img]
举一反三
- 锐角的集合可以写作 A: [img=52x59]1802e90e3d211a5.jpg[/img] B: [img=59x51]1802e90e458312a.jpg[/img] C: [img=67x59]1802e90e4df22e5.jpg[/img] D: [img=60x27]1802e90e57a8d3b.jpg[/img]
- 锐角的集合可以写作 A: [img=52x59]18037fa7a7a576b.jpg[/img] B: [img=59x51]18037fa7b0a272e.jpg[/img] C: [img=67x59]18037fa7b8eb183.jpg[/img] D: [img=60x27]18037fa7c1d7a8c.jpg[/img]
- 获取页面中所有jpg格式的图片，以下写法正确的是（）。 A: $（"img[src$=jpg]"） B: $（"img[src^=jpg]"） C: $（"img[src=jpg]"） D: $（"img[src*=jpg]"）
- 设[img=127x53]17f1b3d6db98b83.jpg[/img]，f（x）=arctanΧ，则[img=56x55]17f1b3d82842941.jpg[/img]=（）。 A: π B: 3π/4 C: -3π/4 D: 2π
- Which of the following propositions is false,set A = {x,x is an integer and[img=60x23]1803a1c6eebb7a3.png[/img]} ? ( ) A: [img=113x25]1803a1c6f77ce06.png[/img] B: [img=139x25]1803a1c7001fe79.png[/img] C: [img=51x22]1803a1c70863f61.png[/img] D: {x|x is an integer and |x| 4}[img=33x22]1803a1c711a7c63.png[/img]