【判断题】The chain transfer constants are actually ratios of rate constants of elementary reactions .
【单选题】If you intend to leave the room tomorrow, you may leave at any of the following hours except______.
【单选题】有如下类和对象的定义: class Constants{ public: static double get PI(){return 3.1416} }; Constants constants; 下列各组语句中,能输出3.1416的是
A.
cout<<constants->getPI()和cout<<Constants::getPI();
B.
cout<<constants. getPI()和cout<<Constants.getPI();
C.
cout<<constants->getPI()和cout<<Constants->getPl();
D.
cout<<constants. getPI()和cout<<Constants::getPI();
【单选题】有如下类和对象的定义: class Constants{ public: static double getPI{return 3.1416;} }; Constants constants: 下列各组语句中,能输出3.1416的是( )。
A.
cout$amp; getPI;和cout$amp;
C.
cout$amp; getPI;和cout$amp; getPI;
【简答题】企业按照消费者的年龄、性别、收入、职业、受教育程度等因素对消费者市场进行细分,这属于( )A. 地理细分B. 心理细分C. 人口细分D. 行为细分