题目内容
（请给出正确答案）
[主观题]
If the activeity of Na+/K+ pump is inhibited by hypothemia, anoxia or chemicals, the bioelectrical activity of the excitable will be
A、the resting potential is less negative, the amplitude will be decreased.
B、the resting potential is more nagetive, the amplitude of AP will be increased.
C、the resting potential will be less negative, the amplitude of AP will be increased.
D、the resting potential is more negative, the amplitude of AP will be incresed.
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n 为方阵 A 的阶数。
关于用户(含数据库管理员)和数据库管理系统在管理数据库方面的作用，下列说法正确并完整的是_____。
，球面内电场强度处处为零，球面上面元
的一个带电量为
的电荷元，在球面内各点产生的电场强度
