【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】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
【简答题】A.He hated driving. B.He forgot to bring it with him. C.He didn't need it for he rode bicycle. D.He didn't know the location of the Bureau of Motor Vehicles.
【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