满足线性规划问题全部约束条件的解称为（）A.最优解 B.基本解 C.可行解 D.多重

对国内各种形式的货物联运，凡在起运地统一结算全程运费的，应以全程运费为计税依据，由起运地运费结算双方缴纳印花税；凡分程结算运费的，应以分程的运费作为计税依据，由起运地运费结算双方缴纳印花税。( )

The harmful effects of smoking is more than you can imagine. When I was young, I didn't know much about the harmful effects of smoking. I didn't know, for example, that it could do terrible (1) _______ to your heart and lungs or that it was (2) ________ for smoking couples to become pregnant. I certainly didn't know their babies may have a smaller birth  (3)_________ or even be  (4)___________ in some way. Neither did I know that my cigarette smoke could (5) __________ the health of non-smokers. However, what I did know was that my girlfriend thought I (6) _______ terrible. She said my breath and clothes smelt, and that the ends of my fingers were turning yellow. She told me that she wouldn't go out with me again (7) ________ I stopped! I also noticed that I became  (8)__________  quickly, and that I wasn't (9) _________ sport as much. When I was taken off the school football team because I was unfit, I knew it was (10) ______to quit smoking.

某写字楼投资项目在10年的持有期内各年净运营收益均为50万元，第10年末净转售收入为600万元，如果折现率为10%，则该写字楼投资项目的收益现值为（）万元。

A.538.55

B.542.56

C.523.75

D.562.34

TCP/IP协议是Internet中广泛使用的协议，其中TCP是指( )协议。

A．传输控制
B．文件传输
C．互联网络
D．超文本传输

2004年2月15日浙江省海宁市黄湾镇五丰村发生特大火灾，火灾原因是（）。

A.烧香敬佛

B.看戏着火

C.烟花爆炸