加弹机吸枪管插在吸丝管路风口时夹持不牢,可用钩刀夹持固定,这样做的危害()
A.损坏吸枪软管
B.引起丝堵第
C.不安全,易钩伤手
D.吸枪软管会脱落
参考答案:C
We ____ the last bus and didn’t have any money for taxi, so we had to walk home.
A.reached
B.lost
C.missed
D.caught
脱疽的主要病因病理是
A.脾气不健,肝肾不足,寒湿侵袭,凝滞脉络
B.温热蕴结,寒湿外侵,气血瘀滞,脉络滞塞
C.湿热下注,气血壅滞,经络阻隔,脉络瘀滞
D.肝肾不足,气血两亏,络脉闭阻,筋骨失养
E.情志郁结,气滞血瘀,脉络闭阻,筋脉失养