多項(xiàng)選擇題

In Unit 8, the resume and application letter should be sent by

A.post
B.fax
C.email
D.mail
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單項(xiàng)選擇題

In a laboratory exercise for medical students, an unknown compound is studied. The student

s are informed that the compound has been isolated from endothelial cells and that its synthesis can be inhibited by aspirin. In the laboratory, the students demonstrate that the compound is a potent vasodilator and platelet antiaggregant. Given these findings, the substance is most likely which of the following mediators?A.5-HTETEB.LTC4C.LXA4D.PGI2E.TXA2