既能收敛止血、止痢，又能截疟、补虚的药物是（）
A.苦楝皮
B.沙苑子
C.侧柏叶
D.仙鹤草
E.三七
参考答案：D
大港油田将沾污类型分为三类，并分别建立了数学模型，计算出各种消除沾污方法的校正系数，这三类是（）。
A.环状源、面状源和线状源
B.点状源、筒状源和环状源
C.面状源、点状源和线状源
D.环状源、线状源和筒状源
The work breakdown structure is an excellent tool for objective control and evaluation. Which of the following is generally not validated through the WBS
A．Time, schedule, and cos
B．Management coordination and organizational structurin
C．Risk and impact of decision—makin
D．Quality of the wor
