Why is the woman waiting?
A.She has to travel together with the man.
B.She doesn't know her whereabouts well.
C.She has just missed the No.7 bus.
D.The No. 7 bus is late.
第3题
APTT测定时加入白陶土的作用为
A、易于观察结果
B、减少外源凝血因子的干扰
C、促进内、外源凝血途径的作用
D、激活FⅫ、FⅪ
E、代替血小板
第4题
APTT测定中加入白陶土的作用是 ()
A、活化因子Ⅱ
B、活化因子Ⅶ、Ⅲ
C、活化因子Ⅹ、Ⅴ
D、活化因子Ⅷ、Ⅸ
E、活化因子Ⅻ、Ⅺ
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