控制轧制、控制强韧性的主要控制工艺参数有()()()。石油管线X80中80的含义是()。
参考答案:变形温度;变形程度;冷却速度;屈服强度最小值80000PSI即551MPa
A client has sustained a right tibial fracture and has just had a cast applied. Which instruction should the nurse provide in his cast care
A.Cover the cast with a blanket until the cast dries.
B.Keep your right leg elevated above heart level.
C.Use a knitting needle to scratch itches inside the cast.
D.A foul smell from the cast is normal.
所谓化学需氧量(),是在一定的条件下,采用一定的强氧化剂处理水氧中的无机还原性物质及部分或全部有机物,所消耗的氧化剂量相对应的氧的()、()。