女，30岁，间歇性牙龈出血1年。体检：双下肢可见散在出血点及紫癜，肝脾不大，余无异常

In your project，you conducted communications requirements analysis to determine sum of information needs for all stakeholders．You have determined and limited who will communicate with whom and who will receive what information．One factor that you considered while doing communications requirements analysis is that for your project，the number of communication channels______．

A．increases in direct proportion to number of people

B．decreases in inverse proportion to number of people

C．increases in exponential proportion when number of people increases

D．none of the above number of communication channels depends on the type of your project

保证铁路运输生产建设事业协调发展，节约使用劳动力，提高劳动生产率的重要条件是()

A.职工人数合理化

B.职工队伍结构合理化

C.职工的素质

D.职工的能力

我国酶免疫分析最常用的标记酶是（）。

A.辣根过氧化物酶

B.碱性磷酸酶

C.β半乳糖苷酶

D.尿素酶

E.葡萄糖6-磷酸脱氢酶

基托加强丝的行走方向应与可能引起基托的折断线呈（）。

A.平行关系

B.垂直关系

C.交叉关系

D.重叠关系

E.没有关系

直流系统事故处理原则是保证（）。