What influence did Luca Pacioli have on the development of accounting?
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When did management accounting appear and how?
What "contribution" did Enron's do to the development of American accounting?
迷走神经兴奋时( )
A. 胃肠平滑肌活动增强,消化腺分泌减少
B. 胃肠平滑肌活动减弱,消化腺分泌增加
C. 胃肠平滑肌活动增强,消化腺分泌增加
D. 胃肠平滑肌活动减弱,消化腺分泌减少
E. 以上都不是
胃肠平滑肌动作电位除极相形成的离子基础主要是( )
A. Na +内流
B. Ca 2+内流
C. K + 内流
D. K + 外流
E. Cl - 内流