皮质激素禁用于胃溃疡是因为()
A.抑制蛋白质合成
B.促进胃酸分泌
C.抑制免疫功能
D.兴奋中枢神经
E.水钠潴留
参考答案:B
—Is Lily's birthday June 2nd?
—___________. [ ]
A. Yes, it is
B. No, she isn't
C. Yes, she is
D. Yes, it's
在以下情况中,实现了消费者均衡的是()
A.MUX/PX>MUY/PY
B.MUX/PX<MUY/PY
C.MUX/PX=MUY/PY
D.MUX/PX=MUY/PY