vb考试
vb考试
某装配整体式单跨简支叠合梁，结构完全对称，计算跨度ι
＝5.8m，净跨径ι
＝5.8m，采用钢筋混凝土叠合梁和预制板方案，叠合梁截面如图4-2所示，梁宽b＝250mm，预制梁高h
＝450mm，b
＝500mm，h＝120mm，混凝土采用C30;叠合梁高h＝650mm，叠合层混凝土采用C35。受拉纵向钢筋采用HRB400级,箍筋采用HPB300级钢筋。施工阶段不加支撑。第一阶段预制梁,板及叠合层自重标准值q
＝12kN／m，施工阶段活荷载标准值q
＝10kN／m;第二阶段，因楼板的面层,吊顶等传给该梁的恒载标准值q
＝8kN／m，使用阶段活载标准值q
＝12kN／m。取a
＝40mm。设计使用年限为50年，结构安全等级为二级。 
施工阶段梁的最大内力设计值M(kN·m),V(kN)，与下列何项数值最为接近？
A:M＝119.5;V＝98.6 B:M＝119.5;V＝82.4 C:M＝109.4;V＝98.6 D:M＝109.4;V＝82,4
某一悬臂水池，壁高H＝1.5m，采用MU10烧结普通砖和M7.5水泥砂浆砌筑，如图6-9所示。水的荷载分项系数取1.2。砌体施工质量控制等级为B级，结构安全等级为二级。 
试确定池壁底部的受弯承载力验算公式(M≤fW)，其左右端项，与下列何组数值最为接近？
A:6.75kN·m／m＜7.20kN·m／m B:5.63kN·m／m＜9.00kN·m／m C:6.75kN·m／m＜9.00kN·m／m D:5.63kN·m／m＜9.7kN·m／m
某砌体房屋采用墙下钢筋混凝土条形基础，基础尺寸如图6-12所示，墙体作用于基础顶面处的轴心的标准值为：永久作用F
＝300kN／m，可变作用F
＝136kN／m，其组合值系数为0.7，基底以上基础与土的平均重度为20kN／m
。 
试问，设计基础底板时采用的基础单位长度的最大剪力设计值V(kN),最大弯矩设计值M(kN·m)，与下列何项数值最为接近？
A:V＝224.3;M＝91.4 B:V＝219.3;M＝89.4 C:V＝224.3;M＝89.4 D:V＝219.3;M＝91.4
The expected time TE used in the PERT algorithm is calculated using the following equation ______.
A:(a+3m+b)/6 B:(a+4m+b))/6 C:(a+5m+b)/6 D:(a+m+b)/3 E:Note: A major assumption for all network methods is that activity durations are statistically dependent and where a=most optimistic time, b=most pessimistic time, m=most likely time.
W: Has the latest Time Magazine arrived yet Today's already Tuesday.
M:______
A:Today' s already Monday. But it hasn' t arrived yet. B:Sorry, it' s late. Probably not till the day after tomorrow. C:It may arrive on Wednesday. D:Time Magazine, so far as I know, is the most popular for us New Yorkers.
W: Has the latest Time Magazine arrived yet Today’s already Tuesday.
M:（）
A:Today’ s already Monday. But it hasn’ t arrived yet. B:Sorry, it’ s late. Probably not till the day after tomorrow. C:It may arrive on Wednesday. D:Time Magazine, so far as I know, is the most popular for us New Yorkers.
W: Has the latest Time Magazine arrived yet Today's already Tuesday.M:______
A:Today' s already Monday. But it hasn' t arrived yet. B:Sorry, it' s late. Probably not till the day after tomorrow. C:It may arrive on Wednesday. D:Time Magazine, so far as I know, is the most popular for us New Yorkers.
? ?下面有3篇短文，每篇短文后有5道题。请根据短文内容，为每题确定1个最佳选项。
{{B}}第一篇{{/B}}
| ? ?
第一篇 ? ? Accurate Timer ? ?These days time is everything. Between meetings and appointments, deadlines and conference calls, my schedule requires that I know the time down to the minute. Even on weekends, I have a football team to coach, shows to tape and planes to catch. If I’m late, I’m sunk. The problem is that it’s hard if my clocks aren’t correct. Even the digital clocks can display time inaccurately. Dead batteries, time changes, any of these can cause a clock to be inaccurate. Now there is no need to worry, because advanced radio technology has produced a clock which gets the time directly from the U.S. Atomic Clock in Fort Collins, Colorado, the standard for time-keeping all over the world. The Atomic Clock by Acorn is the most accurate, reliable and convenient timepiece you can have. ? ?Every morning at 1:00 a. m, this "smart" clock in Colorado automatically resets itself to the exact hour, minute and second. The U. S. Atomic Clock is accurate to ten billionths of a second per day. This means that the clock deviates less than one second over a one million-year period. The Atomic Clock even adjusts automatically for daylight saving time, so you don’t have to remember to "spring forward" or "fall back". The desktop clock model is the only atomic Clock that will not lose time with low power or when you change its batteries. ? ?The most accurate clock in the world is of no use if it is difficult to operate. The Acorn Atomic Clock is engineered in Germany using the latest scientific technology. It comes in two styles, the wall clock and the desktop model. Both are designed to be functional and easy to use. The desk clock’s display features the exact time (in hours, minutes and seconds), month and date, or you can choose to display any two U. S. or world time zones. It weighs only eight ounces, and is the perfect travel clock It also has dual alarms, perfect for couples. Both the desktop and the wall models have an internal antenna for good reception without unattractive wires. |
A:spring time B:summer time C:autumn time D:winter time
为了使程序的输出的正确结果为： Now is 2004．7.10 10：10：10． 那么应在下列程序划线处填入的正确语句是( )。 那么应在下列程序划线处填入的正确语句是( )。 #include ＜iostream＞ using namespace std; class TIME; class DATE { public: DATE(int y=2004,int m=1,int d=1) { year=y; month=m; day=d; } friend void DateTime(DATE &d, TIME &t); private: int year, month, day; }; class TIME { public: TIME(iht h=0, int m=0,int s=0) { hour=h; minute=m; second=s; } friend void DateTime(DATE &d,TIME &t); private: int hour,minute, second; }; ______________________ //函数 DateTime 的首部 { cout＜＜"Now is"＜＜d.year＜＜’.’＜＜d.month＜＜’.’＜＜d.day＜＜ ’ ’＜＜t.hour＜＜":"＜＜t.minute＜＜’:’＜＜t.second＜＜’.’＜＜end1; } int main ( ) { DATE d(2004,7,10); TIME t(10, 10, 10); DateTime(d,t); return 0; }
A:void DateTime(DATE &d,TIME & B:void TIME::DateTime(DATE &d,TIME & const C:friend void DateTime(DATE &d,TIME & D:void DATE::DateTime(DATE &d,TIME &
为使下列程序的正确输出结果为： Now is 2004-7-6 12:12:12 那么应该在程序划线处填入的语句是( )。 #include ＜iostream＞ using namespace std; class TIME; class DATE { public: DATE(int y=2004,int m=1,int d=1) { year=y; month=m; day=d; } void DateTime(TIME &t); private: int year,month, day; }; class TIME { public: TIME(int h=0,int m=0,int s=0) { hour=h; minute=m; second=s; } ______________; //将类 DATE 中成员函数 DateTime 声明为类 TIME 的友元函数 private: int hour,minute, second; }; void DATE: :DateTime(TIME &t) { cout＜＜"Now is "＜＜year＜＜’-’＜＜month＜＜’-’＜＜day＜＜ ’ ’＜＜t.hour＜＜":"＜＜t.minute＜＜’: ’＜＜t.seoond＜＜’.’＜＜end1; } int main ( ) { DATE d(2004,7,6); TIME t (12, 12, 12); d. DateTime (t); return 0; }
A:friend void DateTime(TIME &; B:friend void DATE::DateTime(TIME &0; C:void DateTime(TIME &; D:friend void DateTime(TIME &;
