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【单选题】
以下哪种属性商家未履行承诺之服务?A.
卖家拒绝履行其与买家使用阿里旺旺交流承诺的物流服务
B.
商家提供发票服务
C.
商家按买卖双方阿里旺旺约定发货时间发货
D.
以上均不是
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】小王在某手机店挑选手机，挑选了将近一个小时，但最后觉得没有一款适合自己的，打算离开，但该手机店店员拦住他，要求其购买一部。问该店员的行为侵犯了小王的( )。
A.
公平交易权
B.
自主选择权
C.
安全权
D.
知情权
【单选题】Teachers encourage the use of dictionaries so that_______
A.
students will be able to express their ideas more freely.
B.
students will have more confidence in writing.
C.
teachers will have less trouble in correcting mistakes.
D.
students will learn to be independent of teachers.
【单选题】If a university is to be of any use, it should prepare the students for an intellectual career by ______.
A.
imparting knowledge and developing skills
B.
developing students' independence in thinking
C.
disciplining the students in their subject fields
D.
promoting the imagination in connecting details with general principles
【单选题】Teachers encourage the early use of dictionaries because it helps ______.
A.
students learn how to use dictionaries
B.
students improve their expression in writing
C.
teachers know the progress of students' writing
D.
teachers pay attention to students' writing errors
【单选题】下面哪个类实现了接口Usable?( ) interface Usable { int use(int data); }
A.
class Human implements Usable{ int use(int a) { return 1; } }
B.
class Human extends Usable { public int use(int a) { return 1; } }
C.
class Human implements Usable{ public int use(int a) { return 1; } }
D.
class Human implements Usable{ public int use() { return 1; } }
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