过滤法去除生产污水中的原油,其中应用最广的滤料是()。
A、无烟煤
B、陶粒
C、石英砂
D、核桃壳
参考答案:C
浆细胞病的临床特征是()
A.贫血
B.尿中出现本周蛋白
C.高钙血症
D.血清或尿中出现过量的单克隆免疫球蛋白或轻链或重链片段
E.自发性骨折
–Can you guess if they ______ to play basketball with us?
–I think they’ll come if they _____ free.
A.will come; are
B.will come; will be
C.come; are
D.come; will be