退火酸洗线脱脂段漂洗采用三段级联式漂洗,为2段喷淋和1段()。
参考答案:热漂洗
(2013·皖南八校第一次联考)He is only too ready to help others, seldom, ________, refusing them when they turn to him.
A.if never
B.if ever
C.if not
D.if anything
男,42岁,着凉后右侧腰部、臀部、股后部及小腿外侧疼痛就诊。检查坐骨神经沿途部位有压痛,踝反射存在,但无相应关节活动。
如考虑是坐骨神经疼痛,重要阳性体征是()。
A.Kernig征
B.Lasegue征
C.Brudzinski征
D.Babinski征
E.Gordon征