某隔板的几何中心与要求的中心相比偏左0．30mm，且偏低0．10mm，若要求同心，只

已知f（x⁶）=log₂^x，那么f（8）=______．

风热乳蛾多因受凉、潮湿、疲劳、烟酒过度，有害气体刺激，邪毒乘虚侵袭，搏结于______，其脏腑病理与______的关系较密切。

现有三个独立方案甲、乙、丙，其内部收益率分别为15.32%、16.13%、13.78%，初始投资分别为300万元、420万元、480万元。已知基准收益率为13%，若由于资金紧张，现只能筹到800万元，则最佳组合方案为（）。

A.甲+乙

B.乙+丙

C.甲+丙

D.甲+乙+丙

Believe it or not，optical illusion can cut highway crashes.

Japan is a case in point．It has reduced automobile crashes on some roads by Rearly 75 percent using a simple optical illusion．Butst．ripes,called chevrons(人字形)，painted on ther rads make drivers think that they are driving faster than they really are，and thus drivers slow down.

Now the American Automobile Association Foundation for Traffic Safety in Washington D．C. is planning t。repeat Japan’s success．Starting next year，the foundati。n will paint cheyrons and。ther pattems of stripes on selected roads around the country to test how well the patterns reduce highway erashes．

Excessive(too great)speed plays a major role in as much as one fifth of all fatal traffic accidents， according to the foundation．To help reduce those accidents，the foundation will conduct its tests in areas where speed-related hazards(danger)are the greatest curves，exit slopes，traffic circles，and bridges．

Some studies suggest that straight，horizontal bars painted across roads can initially cut the average speed of drivers in half．However,traffic。ften returns to full speed within months as driVers become used to seeing the painted bars．

Chevrons，scientists say，not only give drivers the impression that they are driving faster than they reallv are but als0 make a lane appear to be narrower．The result is a longer lasting reduction in highway speed and the number of traffic accidents．

The American Automobile Association Foundation for Traffic Safety plans to（）

A. try out the Japanese method in certain areas

B. change the road signs across the country

C. replace straight, horizontal bars with chevrons

D. repeat the Japanese road patterns

程序员编程的主要依据是( )。

A．模块功能应该尽可能单一

B．模块应尽可能独立

C．模块的内聚程度应尽可能大

D．模块间的耦合程度应尽可能大