[单选题](65501)SS4型电力机车段修技术规程要求,额定工作风压下测量TCK7F型电空接触器动、静触头接触压力 应为( )。(2.0分) A.194.2~245.68 N B.195.2~246.68 N C.196.2~247.68 N D.197.2~248.68 N
参考答案:C
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第1题: [单项选择]Which of the following is NOT affiliated to the UN A. WHO. B. B. FIF C. UNESCO. D. IMF. 参考答案:B 答案解析:[详细解答] 世界卫生组织(World Health Organization)、联合国教科文组织(United Nations Educational,Scientific, and Cultura