关于枚举类型变量声明错误的选项是哪一个？ A: enum _card_t { SPADE, HEART, DIAMOND, CLUB} card_type; B: enum _card_t { SPADE=1, HEART, DIAMOND, CLUB}; enum _card_t card_type; C: typedef enum _card_t { SPADE, HEART, DIAMOND, CLUB} card_t; _card_t card_type; D: enum { SPADE, HEART, DIAMOND, CLUB} card_type;

A business card is also called ________________. A: visiting card B: telling card C: calling card D: hotel card

‏A loyalty card can also be named as:​‏​‏​ A: Club card B: Rewards card C: Points card D: Advantage card

Business card can also be referred as:( ) A: visiting card B: calling card C: complimentary card D: name card

departure card / embarkation card / outgoing passenger card

class Card{}下列属于Card类的构造方法的是（）？ A: private Card(){} B: public void Card(){} C: public Card(){} D: Card(){}

对于class Card{}类，下列不属于Card类的构造方法的是（ ）。 A: Card(){} B: public Card(){} C: public void Card(){} D: private Card(){}

信用卡 A: credit card B: visa card C: credit D: card

which of followings belong to credit card? A: American express card B: Master card C: Postcard D: vip card

名片在英语中可称为:（ ） A: calling card B: visiting card C: card D: business card