【简答题】在窗体上画一个命令按钮,然后编写如下程序: Dim x As Integer Sub inc(a As Integer) x=x+a End Sub Private Sub Command1_Click() inc 2 inc 3 inc 4 Msgbox x; End Sub 程序执行后,单击Command1命令按钮,消息框显示结果是【 】。
【单选题】生态系统能量流是通过生态系统的能量()流动。
【简答题】生态系统能量的流动就是通过 ( )进行的。
【简答题】A.He failed to finish the experiment that day. B.Hs hasn't had time to do the experiment. C.He did only part of the experiment. D.The experiment turned out well.
【简答题】已知含有4个元素的字节数组定义如下所示: XA: DB x1,x2,x3,x4 试编写一个程序段,将其中的元素排列顺序颠倒过来。
【简答题】生态系统中的能量流动是通过( )依次传递的;生态系统中能量的源头是( )。
【单选题】()是采取推导的方法,由前提推导出结论。
【单选题】2-3-3 设起点高程为Hs,终点高程为He,则附合水准路线的高差闭合差为( )。
【单选题】People are still obsessed with Peter Sellers because______.
B.
he was as big as The Beatles
C.
his life was full of drama and contradiction
D.
he led a very austere life
【单选题】下列关于生态系统能量流动的叙述,不正确的是( )
C.
在一条食物链中,消费者的级别越高,获得的能量越多
D.
进入生态系统的能量是植物通过光合作用固定的太阳能