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【单选题】
已知某圆管流动的雷诺数Re=2000，则该管的沿程阻力系数【图片】=（ ）A.
0.032
B.
0.064
C.
0.128
D.
0.256
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A.
uninterruptedly
B.
ceasingly
C.
haltingly
D.
movingly
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【多选题】下列哪些说法符合巨幼细胞性贫血 ( )
A.
可有牛肉舌的临床表现
B.
大细胞正色素性贫血
C.
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D.
多起源于营养不良
E.
中性粒细胞核右移
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