＿不是煤矿中常用的氧气检测方法。
A.色谱法
B.电化学法
C.催化氧化法
D.顺磁式法
参考答案：C
如果市场是半强式有效的，通过“内幕消息”可以获得非正常的超额收益。______
The WBS，estimates for each work package，and the network diagram are completed．Which of the following would be the NEXT thing for the project manager to do ？（）
A．Sequence the activitie
B．Verify that they have the correct scop
C．Create a preliminary schedule and get the team's approva
D．Complete risk managemen
