下列关于有源天线的叙述正确的有:()。
A、可以用于所有频段上的场强测量
B、有良好的宽频带特性
C、天线辐射方向图与频率无关
D、天线系数与频率有关
参考答案:A, B, C
以下是网上银行落地业务处理步骤的有()。
A、请求处理落地业务
B、联动扣款
C、打印记账信息
D、修改落地业务状态
词语运用。
1. My _________ (爱好) are reading, singing and dancing.
2. The glasses he _________ (戴) a moment ago are broken. He needs a new pair.
3. Mrs. Smith smiled _________ (幸福) when she received a present from her son on Mother's Day.
4. Alice is so nice that everyone likes to _________ (交朋友).
5. Don't be afraid of making mistakes in class. You won't be ________ (嘲笑).