大型汽轮发电机定子绕组端部的紧固很重要,因为当绕组端部受力时,最容易损坏的部件是( )。
A.出槽口处
B.焊接接头部分
C.线圈换位部分
D.直槽部分
参考答案:A
在高血压的内分泌疾病中,尿儿茶酚胺增多见于
A.皮质醇增多症
B.原发性醛固酮增多症
C.嗜铬细胞瘤
D.慢性肾炎
E.肾动脉狭窄
A block and tackle is “rove to advantage”. This means that the().
A.blocks have been overhauled
B.hauling parts of two tackles are attached
C.hauling part leads through the movable block
D.hauling part leads through the standing block