抗凝治疗常用的药物有肝素、低分子肝素及华法林等,治疗期间应监测凝血时间和凝血酶原时间。
参考答案:对
_________ a sports meeting in our school this Friday afternoon.
A.There is going to be
B.There will have
C.There are going to be
D.There is going to have
在Authorware中,只能限制用户交互的次数,无法限制交互的时间。