对镍铬不锈钢铸件进行碱煮,所用氢氧化钾水溶液的浓度是()
A.10%
B.45%
C.25%
D.20%
E.30%
参考答案:B
男患者,29岁,头痛、呕吐3天,脑膜刺激征(+)。脑脊液抗酸涂片(+)。需尽早选药,应排除下列哪种药物?()
A.异烟肼
B.利福平
C.乙胺丁醇
D.两性霉素B
E.吡嗪酰胺
In managing a project,you notice that a deliverable mentioned in the general conditions of the contract has not yet been received.The seller,however,says the special provisions of the contract void that deliverable.What should you do ?()
A.Require the deliverable as in the contrac
B.Do nothin
C.Contact the contract manage
D.Send a letter requiring the deliverable is me