下列关于DIC发病机制的叙述,错误的是()
A.血细胞受损
B.大量组织因子入血
C.血管内皮细胞损伤
D.ADP缺乏
参考答案:D
Tom is _____ American boy. He plays ________ basketball very well.
A.a, a
B.an, /
C./, the
D.an, the
钻孔灌注桩用反循环回转钻机成孔时,泥浆相对密度越大越好。( )