已知:char a=‘\70’;则变量a中________。
已知以下程序段:int a=3,b=4;a=a^b;b=b^a;a=a^b;则执行以上语句后a和b的值分别是________。
— ___________________
— Once or twice a week.
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
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