静止时边长为[img=13x19]1803071b389e54f.png[/img]的立方体,沿着与它的一条对角线平行的方向以速率[img=64x18]1803071b407a265.png[/img]相对于地面匀速运动时,在地面上测得它的体积为
A: [img=43x22]1803071b491c566.png[/img].
B: [img=43x22]1803071b517c741.png[/img].
C: [img=51x22]1803071b591fd7a.png[/img].
D: [img=20x22]1803071b606abf0.png[/img].
A: [img=43x22]1803071b491c566.png[/img].
B: [img=43x22]1803071b517c741.png[/img].
C: [img=51x22]1803071b591fd7a.png[/img].
D: [img=20x22]1803071b606abf0.png[/img].
举一反三
- 静止时边长为[img=13x19]18030709333ec6b.png[/img]的立方体,沿着与它的一条对角线平行的方向以速率[img=64x18]180307093abd205.png[/img]相对于地面匀速运动时,在地面上测得它的体积为 A: [img=43x22]18030709429e6f3.png[/img] B: [img=43x22]180307094ac79e4.png[/img] C: [img=51x22]18030709524d211.png[/img] D: [img=20x22]180307095a4e9f1.png[/img]
- 静止时边长为[img=13x19]1803a02589c49e3.png[/img]的立方体,沿着与它的一条对角线平行的方向以速率[img=64x18]1803a02592b2ae2.png[/img]相对于地面匀速运动时,在地面上测得它的体积为 A: [img=43x22]1803a0259baad05.png[/img]. B: [img=43x22]1803a025a4a8a17.png[/img]. C: [img=51x22]1803a025ac88fc0.png[/img]. D: [img=20x22]1803a025b5849cf.png[/img].
- 静止时边长为L的立方体,沿着与它的一个棱边平行的方向以速率[img=74x20]17e0af7df095164.jpg[/img]相对于地面匀速运动时,在地面上测得它的体积为[ ] 未知类型:{'options': ['', ' [img=60x24]17e0af7e0f06934.jpg[/img]', ' [img=50x27]17e0af7e1ba1fa3.jpg[/img]', ' [img=32x24]17e0af7e2e2c25e.jpg[/img]'], 'type': 102}
- 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]
- Which of the following propositions is false,set A = {x,x is an integer and [img=60x23]1803a1c503ffa04.png[/img]} ? ( ) A: [img=113x25]1803a1c50cc3162.png[/img] B: [img=139x25]1803a1c514e60ea.png[/img] C: [img=51x22]1803a1c51dd52ef.png[/img] D: {x|x is an integer and |x| <4} [img=33x22]1803a1c525cf1bd.png[/img]