关于肝素的说法中正确的是A．肝素带正电荷B．肝素易通过生物膜C

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问题单项选择题

关于肝素的说法中正确的是

A．肝素带正电荷
B．肝素易通过生物膜
C．口服后立即生效
D．仅在体外有强大的抗凝作用
E．半衰期较短

答案

参考答案：E

解析：治疗量肝素的半衰期为40～90分钟

填空题

用所给单词的适当形式填空。

1. My English teacher often wears _____ (glass).

2. I always _____ (meet) John on my way home. I usually stop _____

(have)a walk with him

3. Kate sings very well. She _____ (want) to be a _____ (music).

4. What _____ the singer _____ (look) like?

5. The old tree is 16 meters in _____ ( high).

选择题

A．I= ，从上向下

B．I= ，从上向下

C．I= ，从下向上

D．I= ，从下向上