离心管由多种材料制成,包括()。
A.塑料
B.不锈钢
C.聚凝胶
D.聚丙烯
E.乙烯
参考答案:A, B, D
A group of children are looking into the box, ________ about what can be inside.
A.worried
B.curious
C.careful
D.sorry
有如下一个Sub过程: Sub mlt(ParamArray numbers()) n=1 For Each x In numbers n=n*x Next x Print n End Sub 在一个事件过程中如下调用该Sub过程: Private Sub Command1_Click() Dim a As Integer Dim b As Integer Dim c As Integer Dim d As Integer a=1 b=2 c=3 d=4 mlt a,b,c,d End Sub 该程序的运行结果为( )。
A.12
B.24
C.36
D.48