血清清蛋白约占血清总蛋白的（） A.30%～40% B.40%～50% C.50%～_爱下问搜题

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问题单项选择题 A1/A2型题

血清清蛋白约占血清总蛋白的（）

A.30%～40%

B.40%～50%

C.50%～60%

D.60%～70%

E.>70%

答案

参考答案：D

选择题

-----Hurry up. Xiao Shenyang is coming.

------ Oh, I was afraid that we_____.

A．already miss him

B．had already missed him

C．will miss him already

D．have already missed him

多项选择题

在垂直管道上仅有轴向位移，其不承受管道重量，但可防止管路振动的支架为( )。

A．活动支架

B．导向支架

C．固定支架

D．吊架