18、【单选题】Why do people of certain profession wear uniform?A、Because uniform is a symbol of one’s class.B、Because uniform erases one’s individuality and stresses uniformity.C、Because uniform makes one look handsome.D、Because uniform is a symbol of one’s social status.

How is flow around a half body obtained? ( ) A: By adding a sink to a uniform flow B: By adding a vortex to a uniform flow C: By adding a source to a uniform flow D: By adding a source and a sink

The chief function of a uniform is to __________.

It can be concluded from the passage that () A: people generally trust a person in uniform B: people enjoy wearing comfortable uniform C: the cost of the uniform is acceptable to people D: people wear uniforms to show their professions

WWW用统一资源定位器URL(Uniform.ResourceLocator)来描述Web页的地址和访问它时所用的协议。()

I ______ wear school uniform to school.

Why has the government required uniform labeling of food since 1994（） A: Because it wants to help consumers compare the fat and calories in the food they buy. B: Because food with uniform labels is not likely to cause disease. C: Because uniform labeling will result in low-fat or fat-free foo

（ ）变量是外部程序传递给顶点着色器和片段着色器的变量，它（ ）被shader程序修改 ；（ ）变量是只能在顶点着色器中使用的变量，一般用它来表示一些顶点的数据。 A: attribute，不能，uniform B: uniform，能够，attribute C: uniform，不能，attribute D: attribute，能够，uniform

（）变量是外部程序传递给顶点着色器和片段着色器的变量，它（）被shader程序修改 ；（）变量是只能在顶点着色器中使用的变量，一般用它来表示一些顶点的数据。 A: attribute，不能，uniform B: uniform，能够，attribute C: uniform，不能，attribute D: attribute，能够，uniform

（ ）变量是外部程序传递给顶点着色器和片段着色器的变量，它（ ）被shader程序修改 ；（ ）变量是只能在顶点着色器中使用的变量，一般用它来表示一些顶点的数据。 A: attribute，不能，uniform B: uniform，能够，attribute C: uniform，不能，attribute D: attribute，能够，uniform