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【单选题】
The type of contract (payment mechanism) chosen for a project is often a reflection of the degree of risk associated with completing that project. For a firm fixed price contract, payment for risk _____ .B.
Is accomplished by paying the actual costs to the contractor. B Is accomplished by paying the contractor for his costs plus a fixed fee (profit).
C.
Is an undisclosed contingency in the contractor's bid.
D.
Is accomplished by paying for the budgeted costs of dealing with risks, as predicted in the project risk assessment.
E.
B and
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【简答题】建筑工程施工质量验收时，对涉及结构安全和使用功能的分部工程应进行（ ）。
【单选题】下列各项，关于动脉血气分析的正常值，错误的是
A.
正常人的血氧饱和度正常值低限为＞95%
B.
正常动脉血H+浓度为(40±5)mmol/L
C.
正常人的氧分压(PaO2)＞60mmHg
D.
pH7.35～7.45
E.
剩余碱BE＞3mmol/L
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