两点坐标增量为△xab=+42.567m和△yab=-35.427m,则方位角aab和距离Dab分别为()
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
执行以下指令后: MOV AL,56H OR AL,0FH AL的内容为:()
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