汇入门静脉的血流中，来自脾的血液占（） A.25% B.15% C.10% D.5%

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问题单项选择题 A1型题

汇入门静脉的血流中，来自脾的血液占（）

A.25%

B.15%

C.10%

D.5%

E.20%

答案

参考答案：C

选择题

Nowadays, sending e-mails to each other has become a way _____ what they think to others.

A．many a student expresses

B．in which more than one student express

C．that most of students express

D．the majority of students expresses

单项选择题

一空载运行线路，首端电压和末端电压分别为U1和U2，下面正确的是（）。

A、U1B、U1=U2

C、U1>U2

D、不确定