【判断题】抗弯截面模量说明截面的形状和尺寸对弯曲刚度的影响。
【单选题】In a neuron with a resting membrane potential of -65mV, the distribution of which ion across theneuronal membrane represents the least potential electromotive force?
【判断题】HXD3电力机车6组牵引变流器的主电路和控制电路相对独立,分别为6个牵引电动机提供交流变频电源。
【简答题】In a resting neuron, sodium and chloride ion concentrations are ( ) in the extracellular fluid and ( ) in the cytosol.