满足不等式|x+1|＞|x-3|的x的集合是（） A: {x|-1＜x＜1}＜ label=""＞＜/x＜1}＜＞ B: {x|1＜x＜+∞}＜ label=""＞＜/x＜+∞}＜＞ C: {x|-∞＜x＜1}＜ label=""＞＜/x＜1}＜＞ D: {x|2＜x＜+∞}＜ label=""＞＜/x＜+∞}＜＞ E: {x|-2＜x＜2}＜ label=""＞＜/x＜2}＜＞

要触发Timer事件,必须通过以下( )属性。 A: Enabled、Interval B: Visible、Interval C: Enabled、Visible D: Tag、Interval

文中（1 ）处正确的答案是（）。 A: interval B: time C: slot D: delay

In determining an interval estimate of a population mean when σ is unknown, we use a t distribution with n - 1 degrees of freedom.

The point estimation is to determine an interval bounded by 2 values such that the probability that the parameter value is within the interval is known.( )

【单选题】如果我们给sex变量添加值标签(1=男性,2=女性),下列哪个命令是正确的? A. label value sex lab_sex B. label define lab_sex 1 "女性"  2 "男性" label value sex lab_sex C. label define lab_sex 2 "女性"  1 "男性" label value sex lab_sex D. label define lab_sex 1 "男性"  2 "女性" label var sex lab_sex

For a uniformly distributed random variable, the probability of the corresponding interval is related to the length of the interval, and it is also related to the starting point of the interval.

将定时器的时间间隔设置为 1 秒，则定时器的 Interval 属性值应设为_________。

For a uniformly distributed random variable, the probability of the corresponding interval is related to the length of the interval, and it is also related to the starting point of the interval. A: 正确 B: 错误

设窗体上有一个标签Label1和一个计时器Timer1,Timer1的Interval属性被设置为1000,[br][/br]Enabled属性被设置为True.要求程序运行时每秒在标签中显示一次系统当前时间.[br][/br]以下可以实现上述要求的事件过程是______. A: PrivateSubTimer1_Timer() Label1.Caption=True <br>EndSu B: PrivateSubTimer1_Timer() Label1.Caption=Time <br>EndSu C: PrivateSubTimer1_Timer() Label1.Interval=1 <br>EndSu D: PrivateSubTimer1_Timer() Fork=1ToTimer1.Interval Label1.Caption=Timer Nextk <br>EndSu