对自身免疫性溶血性贫血患者输血，最好应用（）
A.压积红细胞
B.全血
C.洗涤红细胞
D.血小板
E.白细胞
参考答案：C
I've got to the position where I am _____ hard work [ ]
A. by this means
B. by all means
C. by no means
D. by means of
火电厂用的煤是（）
A.优质煤
B.标准煤
C.无烟煤
D.劣质煤
