You and the seller have discussed a change to the project and have agreed on the technical aspects of what is needed .Later, the seller calls to tell you he is having extreme difficulty getting the contracting office to make the change to the contract. It would be BEST for you to:你和卖方就项目变更进行了交谈并商定了相关的技术内容.之后,卖方给你打电话,说明在要求合同管理员进行合同变更时,遇到了极端的麻烦.你最好:
A. Make the change yourself.自己作出变更.
B. Notify the project office of your need for assistance.通知项目办公室,说明需要帮助.
C. Work with the contracting office to resolve the problem.与合同管理员一起,解决问题.
D. Contact the project sponsor for assistance.与项目发起人联系,获取帮助.
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After conducting a make-or-buy analysis and reviewing its results, your company decided to award a contract for project management services on a pharmaceutical research project. Because your company is new to project management and does not understand the full scope of services that may be needed under the contract, it is most appropriate to award a在进行自制或购买决策后, 你们公司决定对药品研究项目的管理工作进行外包。 因为你们公司对项目管理是外行。不能完全了解合同所规定的管理服务范围。 因此,最好是签订:
A. Lump-sum contract 总价承包合同
B. Fixed-price incentive contract 固定价格激励合同
Cost-plus-a-percentage-of-cost contract 成本加比例成本合同
D. Time-and-materials contract 工料合同
若已知负荷的无功功率为Q,视在功率为S,则负荷的功率因数角φ为______。
A. arcsin(Q/S)
B. arccos(Q/S)
C. arctg(Q/S)
D. arcctg(Q/S)
在两端供电网中,由两个供电点的电压相量差引起的功率称为___________。
电力系统中的两端供电网和环形网络统称为________。