问题
单项选择题
下列关于TDD技术的描述正确的是:()。
A.易于使用非对称频段,无需具有特定双工间隔的成对频段;
B.适应用户业务需求,灵活配置时隙,优化频谱效率;
C.上行和下行使用同个载频,故无线传播是对称的,有利于智能天线技术的实现;
D.无需笨重的射频双工器,小巧的基站,降低成本;
答案
参考答案:D
下列关于TDD技术的描述正确的是:()。
A.易于使用非对称频段,无需具有特定双工间隔的成对频段;
B.适应用户业务需求,灵活配置时隙,优化频谱效率;
C.上行和下行使用同个载频,故无线传播是对称的,有利于智能天线技术的实现;
D.无需笨重的射频双工器,小巧的基站,降低成本;
参考答案:D
从右栏中找出能够与左栏相配的句子。 | ||
A man goes to a fast-food (快餐) restaurant for lunch. A waiter (服务员) comes to him Waiter: May I help you? The man: Yes, I'd like a hamburger, fried (油炸的) chicken and French fries. Waiter: Anything else (其他的)? The man: No. That's it. Waiter: Is that for here or to go? The man: To go. The man pays (支付) for his lunch. The waiter puts (放) the man's lunch in a bag. The man takes the bag and goes out. | ||
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