施工企业的劳动力招募费应由()开支。
A、定额人工费
B、规费
C、企业管理费
D、项目法人管理费
参考答案:C
— Whom shall I give the document?
— To ________ is in the office. However, _______to require a written paper for it.
A.whom; make sure
B.who; make sure
C.whomever; be sure
D.whoever; be sure
已知3阶B-树如图所示。 (1)画出将关键字88插入之后的B-树; (2)画出将关键字47和66依次插入之后的B一树。