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单项选择题
除针入度能够表示沥青材料的条件粘度以外,同样属于条件粘度的指标是()。
A.针入度指数
B.粘附性
C.延度
D.软化点
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相关考题
单项选择题
Once a month, just after sunset, trucks fill an outdoor parking lot in Los Angeles, California.Some trucks sell all kinds of food. Others have clothing for sale. These are known as fashion(时尚)trucks.
It's really fun to go through everything in the truck. The back of the truck is a small store. Clothing hangs on one side. Jewelry(首饰)and purses are on the other. The store looks colorful and is well organized. There is also a very small room for trying on clothes.
Jordana Fortaleza is one of the truck owners. She says the cost of owning a truck is much lower than paying for a store. And there is another reason to use a truck. You can take your business to your customers. But there are also difficulties.
The biggest problem is the weather. In winter, it's cold outside and there's no one around. Another problem is keeping the truck in good condition. When it breaks down, the repairs can take days. Business stops during the time. It happens at least once a year because her truck is 38 years old.
Meagan Rogers is a fashion school graduate. She says the job market is so hard now, but with a fashion truck she's able to start earning money while her classmates are still working without pay.
Which of the following is an advantage of a fashion truck?(
A.Itattractsmorecustomers
B.Itcostslessthanastore
C.Itneedsrepairsonceayear
D.Ithasasmallroominit
单项选择题
计算残留稳定度需要测定试件漫水( )后的马歇尔稳定度。
A.24h
B.48h
C.3d
D.7d
单项选择题
下面对静态数据成员的描述中,错误的是( )。
A、静态成员在类的所有对象中是共享的。这意味着无论创建多少个类的对象,静态成员都只有一个副本。
B、静态数据成员可以在类体内进行初始化
C、使用 static关键字来把类成员定义为静态的
D、静态数据成员可以用类名加作用域限定符::访问
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