电镀
参考答案:
常规单金属镀,复合电镀,合金电镀,脉冲电镀,高速电镀,激光电镀,刷镀等。目的是防护装饰;提高减摩耐磨性能;制备特殊功能金属镀层(光、电、磁、可焊性等)
—May I speak to Mr. Morgan?
—Sorry. He ______ on the farm. [ ]
A. works
B. work
C. is working
D. to work
初产妇,孕39周,近日来食欲增加,晚 11点有腹部阵痛,一夜未睡,今晨7时就诊,精神疲乏,有宫缩,10~20秒/10~35分,宫缩时,宫壁不硬。肛查:先露头,半固定,宫口开指尖,前羊水囊不明显,坐骨切迹>2横指。应首选的处理措施是
A.肥皂水灌肠B.缩宫素静滴C.人工破膜D.哌替啶100mg肌注E.补液纠酸