患者APTT及PT同时延长,提示有缺陷的凝血因子是()
A.因子Ⅹ、Ⅴ、Ⅱ、Ⅰ
B.因子Ⅸ、Ⅺ、Ⅻ
C.因子PK、HMWK
D.因子Ⅶ、TF
E.因子Ⅷ、Ⅸ、Ⅺ
参考答案:A
All that can be done ____. [ ]
A. has been done
B. has done
C. have done
D. were done
冬天孩子们围着火炉取暖这是利用__________的方式获取内能;而远离火炉的孩子同时还要靠双手反复摩擦让手感到温暖,这是利用__________的方式增加了手的内能。(填“做功”或“热传递”)