良性单克隆丙种球蛋白病常出现
A．贫血B．血中Ig升高C．本周蛋白D．骨损害E．游离轻链
参考答案：B
The newly-designed iPhone 4S on the market____________ well now. Get one before it __________out in the shop.
A．sells, is sold
B．sells, sells
C．is sold, is sold
D．is sold, sells
对转轮等重要工件应在焊接后进行（）处理，以便进一步减少焊接应力和变形。
A.回火
B.正火
C.淬火
D.退火
