某腐蚀体系的参数为:E 0a = -0.4V,E 0c = 0.8V,E cor = -0.2V。当R = 0时,I cor = 10mA,该腐蚀电池属于什么控制类型?如果欧姆电阻R = 90Ω,那么I′ cor为多少?腐蚀电池又属于什么控制类型?
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
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