按16%含水率,比较下列树种的容积重()。
A.水曲柳>花梨木>椴木>杨木
B.花梨木>水曲柳>椴木>杨木
C.椴木>杨木>水曲柳>花梨木
D.杨木>椴木>水曲柳>花梨木
参考答案:B
电脱在使用中要根据泥浆液面高度及时调节()高度,防止泥浆抽入管线。
Which of the following is not a tool & technique of the develop project charter process ?()
A.Earned value method.
B.Project selection methods.
C.Project management information system.
D.Project management methodology.