交叉支撑装置端头螺栓()用专用力矩扳手紧固,转8AG、转8G、转K2型紧固力矩为()。
参考答案:母;675~700N²m
The young woman became critically ill and was sent to the big city,where specialists can be called ___to study the ____disease.
A.up , general
B.in, rare
C.on , serious
D.for , important
把一个矩形线圈从矩形的匀强磁场中匀速拉出(如图),第一次拉出的速度为v,第二次拉出的速度为2v,则两种情况下拉力的大小之比F1:F2=__ __,拉力的功率之比P1:P2=_____,线圈中产生的焦耳热之比Q1:Q2=_____.