var str="hello"; var str1 = new String("hello"); alert(str.equals(str1));的值是（）

10下面isEmptyString方法书写正确的是 A: public boolean isEmptyString(String str){ return str.length==0||str==null; } B: public boolean isEmptyString(String str){ return str==null||str.length()==0; } C: public boolean isEmptyString(String str){ return str==""||str.length==0; } D: public boolean isEmptyString(String str){ return str.equals("")||str.length==0; }

If the elasticity equals -10，the Lerner Index equals 0。01（ ）

"Hello".equals("hello")和"java".equals("java")的值分别是多少？

In short run the shutdown point is that point at which A: price equals marginal cost. B: average fixed cost equals marginal cost. C: average variable cost equals marginal cost. D: average total cost equals marginal cost.

To maximize profit, the monopolist produces on the ________ portion of the demand curve where ________. A: elastic; price equals marginal cost B: elastic; marginal revenue equals marginal cost C: inelastic; price equals marginal revenue D: inelastic; marginal revenue equals marginal cost

如果不覆盖equals()方法，则equals()方法与==的结果是一样的。

以下方法是在Object类中定义的,( )。 A: toString()、print()、equals() B: print()、equals()、getClass() C: equals()、getClass()、toString() D: getClass()、toString()、main()

The word 'reservation' equals to (   ).

Ethics equals morality .