During a project the scope of a product purchased on a cost reimbursable contract has increased．In the contract the fee to cover the contractor's indirect costs and allow a profit is calculated as 20% of the direct costs．What is most likely to be true ？（）

A．The contractor's indirect costs will increase and the customer's payment for them will increase，to

B．The contractor's indirect costs will increase but the eLlstomer's payment for them will not increas

C．Neither the contractor's indirect costs nor the customer's payment for them will increas

D．The contractor's indirect costs will not increase but the customer's payment for them will increas

空压机主机排气温度高的原因（）。

A、润滑油量不足或油质不好

B、冷却水量不足或油冷却器堵塞

C、空气过滤器不清洁或油过滤器堵塞

D、主机头内机械故障或热控阀故障