若A1，A1，A1是一个完备事件组，即A1,A1,A1两两不交，A1等于样本空间。则任一事件B的全概率公式是（）

[问答题]若A1，A2，…，An为样本空间的一个划分，B是任一事件，由全概率公式知，P（B）=（）.

[单选题]A1事件表示（）A . 服务小区质量高于门限B . 服务小区质量低于门限C . 邻接异RAT小区质量高于门限D . 邻接异RAT小区质量低于门限

如题图所示电路，电流表A1和A1的读数分别为A1和A1，则电流表A1的读数为（ ）A1A A1B A1C A1D A1如题图所示电路，电流表和的

[单选题]设ρ{(A1，A2)，(A1，A3)}是关系R(A1，A2，A3)上的一个分解，下表是R上的一个关系实例r，R的函数依赖集为(11)，分解ρ(12)。A．F={A1→A2，A1→A3}B．F={A1→A2}C．F={A1→A3}D．F={A1A3→A2，A1A2→A3}

[判断题] 如果A1=学习的革命，则公式“=Search（“的”，A1）”返回3，“=Searchb（“的”，A1）”返回3。A . 正确B . 错误

[单选题](A1)A．MORE THAN WILLPOWER.B．SUPPORT NETWORK.C．CHANGING YOUR ENVIRONMENT.D．START SLOW.E．FIRST THINGS FIRST. WE ALL KNOW THAT BREAKING A BAD HABIT OR ESTABLISHING A NEW, HEALTHY ONE CAN BE DIFFICULT, BUT PERSISTENCE PAYS OFF．RESEARCHERS AT THE UNIVERSI

[单选题](A1)A．CREATE A CREATIVE SPACE．B．KEEP AN OPEN MIND．C．ANYTHING IS POSSIBLE．D．DON"T NEGLECT THE DETAIL.E．TIE INTO YOUR BUSINESS GOALS. CREATING A CREATIVE WORKFORCE PLACING AN EMPHASIS ON CREATIVITY WITHIN THE WORKFORCE IS ONE OF THE SMARTEST THINGS TH

[单选题](A1)A．MIND YOURSELF THAT DON"T BE A SLAVE TO EMAIL.B．YOU SHOULD PLAN YOUR DAY AT THE START OF EACH DAY.C．GETTING YOUR OFFICE ORGANIZED WILL IMPROVE YOUR WORKING EFFICIENCY.D．TAKING ADVANTAGE OF SOME RIGHT SOFTWARE COULD HELP YOU A LOT.E．YOU CAN DELE

[单选题](A1)A．SEARCH, DON"T FILE．B．MAKE AN APPOINTMENT RIGHT AFTER WORK.C．FIGURE OUT YOUR CORE WORK ACTIVITIES.D．AVOID INSTANT MESSAGING AND TURN OFF PHONES.E．SAY NO. WHAT WOULD YOU DO IF YOU HAD AN EXTRA HOUR A DAY? THIS IS A COMMON BARRIER I RUN INTO WHEN

[单选题]有如下程序： INPUT TO A1 IF A1=10 B1=0 ENDIF B1=1 ?81 假定从键盘输入的A1的值一定是数值型，那么上面条件选择程序的执行结果是（ ）。A． OB． 1C． 由A1的值决定D． 程序出错