在凝血过程中外源性凝血系统的激活起始于()
A.组织因子的释放
B.因子Ⅻ的激活
C.因子Ⅶ及Ⅹ的激活
D.因子Ⅺ的激活
E.PF3的释放
参考答案:A
My life has been blessed with many important occasions and achievements ________ I am proud.[ ]
A. of which
B. in which
C. for that
D. in that
模板工程必须经过支撑杆的设计计算,并绘制模板施工图,制订相应的施工安全技术措施。()