血小板栓子形成按发生顺序包括的时期有()
A.血小板黏附期
B.血小板活化期
C.血小板聚集期
D.血小板血栓稳定期
E.血小板收缩期
参考答案:A, C, D
I wrote a letter of complaint, and the airline has promised to _____ the matter.
A.look up
B.look into
C.look through
D.look for
肺栓塞肝素应用的禁忌证()、()、()、()、()、()。