What is the result?()
A、 420 is the output.
B、 An exception is thrown at runtime.
C、 All constructors must be declared public.
D、 Constructors CANNOT use the private modifier.
E、 Constructors CANNOT use the protected modifier.
下列代码的执行结果是( )。
A、
B、
C、
D、
系统可靠性的简单度量是平均故障间隔时间(MTBF),其计算公式是(1);软件可用性是指在某个给定时间点上程序能够按照需求执行的概率,其定义为(2)。(MTTF://MeanTimeToFailure;MTTR:MeanTimeToRepair)空白(2)处应选择()
A、可用性=MTTF/(MTTF+MTTR)×100%
B、可用性=MTTR/(MTTF+MTTR)×100%
C、可用性=MTTF/(MTTF-MTTR)×100%
D、可用性=MTTR/(MTTF-MTTR)×100%
Given that a scoped attribute cart exist only in a user’s session, which two, taken independently, ensure the scoped attribute cart no longer exists?()
A${cart = null }
B
仔细阅读下面的程序,写出程序的执行顺序(写出编号)
Which two choices are equivalent?()
A16 > 4
B16 / 2
C16 * 4
D16 >> 2
E16 / 22
F16 >>> 2