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【单选题】
X62W万能铣床工作台进给没有采取制动措施,是因为( )。
A.
惯性小
B.
速度不用丝杠传动
C.
有机械制动
拍照语音搜题，微信中搜索"皮皮学"使用
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【简答题】4- 13. 设 IP 数据报使用固定首部,其各字段的具体数值如图所示(除 IP 地址外,均为十进制表示)。试用二进制运算方法计算应当写入到首部检验和字段中的数值(用二进制表示)。 4 5 0 28 1 0 0 4 17 首部检验和(待计算后写入...
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