单项选择题 When we aim to gain passive agreement, we try to get the audience agree on our course of action _____. A、but don’t expect them to join us in our action B、but don’t allow them to start enacting our policy C、and expect them to join us in our action D、and allow them to start enacting our policy

未知题型 设窗体上有一个列表框控件Listl，含有若干列表项。以下能表示当前被选中的列表项内容的是D.Listl：Index

问答题 2、重力分析的程序？