设变量已正确定义,则以下能正确计算f=n!的程序段是【 】。
A. F=0： for(i=1；i＜=n；i++) f*=i；
B. f=1；for(i=1；i＜n；i++) f*=i；
C. f=1； for(i=n；i＞1；i++)f*=i；
D. f=-1； for(i=n；i＞=2；i--)f*=i；
根据《建设工程工程量清单计价规范》(GB 50500—2008)，石方工程中预裂爆破的工程量计算应按( )。
A. 设计图示以天然密实体积计算
B. 设计图示以钻孔总长度计算
C. 设计不同孔径以孔数计算
D. 设计不同孔深以孔数计算
Why do some people fell that husbands should pay their wives for their housework
A. Because wives' work at home has its value.
Because wives can't qualify for social security.
C. Because husbands are employers.
D. Because raising a family needs money.
Which of the following is tree according to the passage
A. Bosses refuse to pay part of the taxes for female employees.
B. Full-time housewives are required to pay social security taxes.
C. Husbands are paying the social security taxes for their wives.
D. Women working at home can't get social security.
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