【单选题】sign( )是符号函数,变量X的值为1000,则表达式样10<=X&100==sign(-100)的值为
【单选题】I soon found that the work I was doing had already been done by someone else.________,I was wasting my time.
【单选题】. I soon found that the work I was doing had already been done by someone else - ________, I was wasting my time.
【单选题】关于职业道德,下列说法中正确的是( )。
B.
职业道德规范是从法律责任的角度界定一个行业的执业标准
C.
职业道德规范的实行,是由国家机关依靠国家强制力来保证实施的
D.
职业道德是一个行业从业人员所应恪守的道德标准,或者说是人们在其职业活动中应当遵循的行为规范和准则
【单选题】预设动画的操作要用到菜单中的哪一栏( )