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【单选题】
去氧肾上腺素对眼的作用是:A.
兴奋瞳孔扩大肌，使瞳孔扩大
B.
阻断瞳孔括约肌M受体，使瞳孔扩大
C.
使瞳孔缩小，眼内压降低
D.
使瞳孔缩小，眼内压升高
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皮皮学刷刷变学霸
举一反三
【单选题】在X线平片显示膀胱区有致密影,呈圆形,椭圆形,同心圆和桑椹形、边缘光整,大小不一,首先应诊断为
A.
静脉石
B.
前列腺结石
C.
输尿管下端结石
D.
膀胱结石
E.
子宫肌瘤钙化
【单选题】In a macroeconomic model without foreign trade or government spending, aggregate demand is the sum of______.
A.
personal saving and private investment
B.
personal saving and personal consumption
C.
personal consumption and personal income
D.
personal consumption and private investment
【单选题】An increase in government spending
A.
increases consumption, increases hours worked, and increases the real wage.
B.
reduces consumption, increases hours worked, and increases the real wage.
C.
reduces consumption, increases hours worked, and reduces the real wage.
D.
reduces consumption, reduces hours worked, and reduces the real wage.
【单选题】An increase in government spending
A.
increases consumption and output.
B.
increases consumption, decreases output.
C.
decreases consumption, increases output.
D.
decreases consumption and output.
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