YJ29滤嘴接装机水松纸切刀施压气缸低压的设定压力为4.1bar。
参考答案:错
.____has finished the task ahead of time will be rewarded,though we don’t know who
It will be.
A.Those who
B.Anyone
C.Whoever
D.Who
计算题:一金属棒在20℃时长1000mm,问在45℃时该金属棒长度为多少?(该金属的线膨胀系数为4×10-6m/℃)