题目内容

有关本周所学知识,下列说法正确的是()

A. new Cylinder().setCylinder(2.5,5,3.14);其中new Cylinder()就是匿名对象
B. 当一个.java源文件中,有多个类时,每个类都必须使用public进行修饰
C. 当成员变量与局部变量同名时,要在局部变量前面加this
D. 类具有封装性,所以类的成员变量和成员方法是不能被访问的

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更多问题

以下哪个是Student类创建对象的正确语句()

A. s1=new Student()
B. s1=Student()
C. Student s1=new Student()
D. Student s1=Student()

For a mature plant cell which contains a central vacuole, the water potential equals()

A. The sum of Ψp, Ψs, and Ψm
B. The sum of Ψp and Ψm
C. The sum of Ψp and Ψs
D. Ψs minus Ψm

The dried seeds absorb water mainly through , which greatly depends on the value of()

A. Osmosis, Ψs
B. Active absorption, Ψp
C. Passive absorption, Ψs
D. Imbibition, Ψm

杯状细胞可见于()

A. 单层扁平上皮
B. 单层柱状上皮
C.未角化的复层扁平上皮
D. 变移上皮

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