路用C40的混凝土，经设计配合比为水泥：水:砂:碎石=380:175:610:130

下列对类的构造函数和析构函数的描述中，正确的是( )。

A．构造函数可以重载，析构函数不能重载

B．构造函数不能重载，析构函数可以重载

C．构造函数可以重载，析构函数也可以重载

D．构造函数不能重载，析构函数也不能重载

计算机网络信息安全中鉴别交换是在通信进程中，以双方互换约定信息方式确认实体身份机制。（）

Man: I was expecting another hot, muggy day. Woman: But the wind has cooled things off, hasn't it Question: What does the woman mean

A．It's uncomfortable because of the wind.

B．It isn't as hot as the man thought.

C．The man expected it to be windy.

D．The wind hasn't made it any cooler.

技能是习惯性的能力。