关于肝性脑病的论述,下列哪项不正确
A.乙酰胆碱是兴奋性神经递质
B.广氨基丁酸是抑制性神经递质
C.5-羟色氨为假神经递质
D.氨可干扰脑的能量代谢
参考答案:C
Jim talked for about half an hour yesterday. Never__ him talk so much.
A.I heard
B.did I hear
C.I had heard
D.had I heard
QR条码的纠错等级中,H级的纠错能力可以纠错()的数据码字。
A、30%
B、25%
C、15%
D、7%