温度下降1℃时,氧耗量约下降()
A.2%
B.5%
C.10%
D.15%
E.20%
参考答案:B
—Please go and say hello to your aunt.She’s in the living room now.
—She has arrived! But when ______ she ______?
A.will; arrive
B.did; arrive
C.had; arrived
D.has; arrived
有助于判断脑动脉的功能情况以及脑组织的病变情况的实验室检查有()。
A.磁共振显像
B.脑电图
C.CT显像
D.X线片
E.脑电阻抗图