用综合检验方法检验一对离合器的贴合面积时,一般要求贴合面积不少于()。
A.30%
B.60%
C.80%
D.90%
参考答案:B
通井时,应及时检查井架、绷绳、地锚及地面设备变化情况,发现问题及时处理。
The project team has just completed the initial project schedule and budget.The NEXT thing to do is ().
A.begin risk identification
B.begin iterations
C.determine communications requirements
D.create a bar(Gantchart