对焊缝进行防锈处理最有效的方法是()。
A.磷化处理
B.电泳涂装
C.采用焊缝密封胶
D.钝化处理
参考答案:C
Qi Baishi's style of painting often leaves the audience _______ and makes them use their imagination. [ ]
A. guess
B. guessing
C. guessed
D. to guess
IgE水平降低的有()
A.共济失调性毛细血管扩张症
B.肝脏疾病
C.荨麻疹
D.恶性肿瘤
E.重链病