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[单选题]

函数rotate（numberrotate)是以（)为中心旋转当前坐标轴？

A.图形的中心点

B.图形的左上角

C.图形的左下角

D.坐标原点

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更多“函数rotate(numberrotate)是以()为中心旋…”相关的问题

第1题

定义元素的transform属性时执行rotate（)函数，可让元素发生旋转。（)

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第2题

在CSS3中,使用transform属性可以实现变形效果。下列选项中,能够实现元素缩放的函数是（)。

A.translate()方法

B.scale()方法

C.skew()方法

D.rotate()方法

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第3题

Processing可以通过坐标系的变换实现动画效果，下列函数描述不正确的是：（)。

A.pushMatrix()将当前的视图矩阵压入堆栈，保存坐标系。

B.popMatrix()将视图矩阵弹出堆栈，恢复原先的坐标系。

C.translate(x, y)将原点由(0,0)移动到(x,y)处。

D.rotate(angle)绕原点顺时针旋转。

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第4题

旋转命令是（)。

A.copy

B.move

C.pline

D.rotate

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第5题

调用Rotate命令后,选择参数（)可将对象按参考方法旋转。

A.C

B.R

C.S

D.T

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第6题

ROTATE命令只能在当前的UCS下使物体绕某一个点旋转。（)

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第7题

下列是CSS3transform属性方法的是（)。

A.transform.:translate(x,y)

B.transform.:rotate(x)

C.transform.:scale(x,y)

D.transform.:skew(x,y)

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第8题

rotate（）方法能够旋转指定的元素对象，主要在二维空间内进行操作。（）

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第9题

Tornadoes, whirlwinds, and watersprouts are rotating funnel cloud air masses of small diam

eter. They are differentiated by the intensity of their rotation and by the surfaces that they traverse. Though tornadoes and whirlwinds both travel over land masses, whirlwinds are atmospheric systems smaller than tornadoes. Watersprouts are tornadoes that form. or pass over a water surface. A tornado is a powerful vortex or "twister" whose rotational speeds are estimated to be near 300 miles per hour. The first visible indication of tornado development is usually a funnel cloud. As this funnel dips earthward, it becomes darker because of the debris that is forced into its intensifying vortex. Some tornadoes give no visible warning Until their destruction strikes the unsuspecting victim. Tornadoes often occur in groups, and several twisters sometimes descend from the same cloud base. The forward speed of a tornado is normally 30 to 40 miles per hour. In the short time that it takes to pass, a tornado can cause fantastic destruction. There have been cases reported in which blades of straw were embeded in fence posts.

How are tornadoes distinguished from whirlwinds？

A．Whirlwinds rotate in a different direction than tornadoes do.

B．Tornadoes travel over land and whirlwinds over water.

C．Tornadoes are larger than whirlwinds.

D．Only tornadoes are funnel-shaped.

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第10题

Tornadoes, whirlwinds, and water-sprouts are rotating funnel cloud air masses of small dia

meter. They are differentiated by the intensity of their rotation and by the surfaces that they traverse. Though tornadoes and whirlwinds both travel over land masses, whirlwinds are atmospheric systems smaller than tornadoes. Water-sprouts are tornadoes that form. or pass over a water surface. A tornado is a powerful vortex or "twister" whose rotational speeds are estimated to be near 300 miles per hour. The first visible indication of tornado development is usually a funnel cloud. As this funnel clips earthward, it becomes darker because of the debris that is forced into its intensifying vortex. Some tornadoes give no visible warning until their destruction strikes the unsuspecting victim. Tornadoes often occur in groups, and several twisters sometimes descend from the same cloud base. The forward speed of a tornado is normally 30 to 40 miles per hour. In the short time that it takes to pass, a tornado can cause fantastic destruction. There have been cases reported in which blades of straw were embedded in fence posts.

How are tornadoes distinguished from whirlwinds？

A．Whirlwinds rotate in a different direction than tornadoes do.

B．Tornadoes travel over land and whirlwinds over water.

C．Tornadoes are larger than whirlwinds.

D．Only tornadoes are funnel-shaped.

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