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【简答题】
完形填空。 Marc sat next to me when we were in Hill Junior  School. He had a serious 1 in communicating with people. One always had to guess what he was saying. 2 ,most of my classmates did not like to be with him because his hands and shirts were always. 3 I tried to let him know the importance of being clean by 4 him several times a day to wash his hands. But he just could not understand. One day , our teacher Miss West walked up  to  Marc. 5 saying anything, she took Marc to the washroom. Slowly , Miss West washed his 6 and told him that he should keep himself clean. She did that every day for one month .  7   , Marc understood. Miss West's love has given me a .good example to follow when I 8 my job. I always remember to teach my students by showing them the right 9 to do things. And most important of all, I always remember to give them 10 to leam and to grow up. (     )1. A. question (     )2. A. Instead (     )3. A. dirty (     )4. A. talking (     )5. A. With (     )6. A. face (     )7. A. At last (     )8. A. did (     )9. A. ways (     )10.A. more advice B. problem B. However B. clean B. saying B. Without B. feet B. At first B. am doing B. answers B. less advice C. accident C. Besides C. new C. speaking C. After C. shirts C. Such as C. have done C. time C. more time D. hobby D. Except D. old D. telling D. Above D. hands D. So far D. am going to do D. food D. less time
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【单选题】ZigBee工作在ISM频带,其中在2.4GHz频带,共有( )个信道。
A.
10
B.
1
C.
27
D.
16
【多选题】多选题:何震篆刻的风格特点
A.
篆法简洁经济
B.
章法平正
C.
刀痕显露
D.
痛快生辣中有苍劲之气
【简答题】ZigBee工作在ISM频带,其中在2.4GHz频段,共有( )个信道;在915MHz频段,共有( )个信道。
【判断题】蓝牙和 ZigBee 都工作在 2.4GHz 频段,都能提供相同的信道数量。
A.
正确
B.
错误
【判断题】IEEE 802.15.4(ZigBee)工作在 ISM 频带,定义了两个频段,2.4GHz 频段、896/915MHz 频带。在 IEEE 802.15.4 中共规定了 27 个信道:在 2.4GHz 频段,共有 16 个信道,信道通信速率为 250kbps。
A.
正确
B.
错误
【简答题】简单说明 Session 与 Cookie 在使用上的区别。
【判断题】定位相机就是固定在一个位置的摄像机。
A.
正确
B.
错误
【多选题】4GHz频段为各国共同的ISM频段。因此()等无线网络,均可工作在2.4GHz频段上
A.
ISDN
B.
无线局域网
C.
蓝牙
D.
ZigBee
【单选题】ZigBee 工作在 2.4 GHz 频段时, 信道通信速率为( ) Kbps。
A.
250
B.
40
C.
20
D.
10
【判断题】新时期秘书要具有创新精神,大胆地试,大胆地闯。如果总是考虑上级的意见和员工的要求工作,就不能有突破性的进展。( )
A.
正确
B.
错误
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