公司规定滑履轴承温度不得超过75℃
参考答案：错
Don’t forget to __________ your school things when you have finished your homework .
A．put out
B．put up
C．put down
D．put away
石墙的灰缝应在最后用( )水泥砂浆统一勾缝。
A．1:0.5B．1:1C．1:2D．1:3
