【简答题】The first computer was __________.
【简答题】硅酸盐水泥中C 2 S早期强度低,后期强度增长多,而C 3 S,是对水泥强度贡献最多的矿物。
【判断题】Anyone can perform. miracles so long as he concentrates something; but television discourages concentration. ()
【单选题】The first step in the control process is ( )
A.
Measuring actual performance
B.
Establishing goals and standards
C.
Comparing results with objectives
D.
Take corrective action
【单选题】When sometimes they cannot enjoy adequate sleep, the long sleepers might ( ).
D.
be extremely depressed
【单选题】以下关于构造方法和析构方法的说法正确的是( )。
B.
析构方法是在对象创建时初始化对象,而构造方法是在对象销毁时释放额外资源