通报用于反映新情况、新问题，行文强调及时快捷。 ( )
参考答案：对
The type of contract where the buyer incurs opportunity cost but little or no additional cost risk is called______.
A) fixed-price with incentive B) firm-fixed-price C) fixed-price with economic price adjustment D) fixed-price with right of renewal
制动总泵应动作灵敏、可靠、无（）现象。
A.失灵
B.失效
C.泄露
D.失控
