【判断题】“基因”一词是1909年英国科学家W.Bateson提出来的。
【单选题】—____ sleep make him irritable.
A.
o you’d better remind him to stop _____ so hard.
【简答题】阅读下面短文, 根据短文内容判断正误,正确填A,错误的填B。 Mr. Smith usually got up late in the morning, so Mrs. Smith always called him up in order to make him not to be late for work. One day, they had a loud and long quarreli...
【简答题】The cinema was half ______. We’ve made a ______ attempt to make him change his mind. Don’t sleep on ______ boards. The poor girl went on for another ten miles on an ______ stomach. The walls look soli...
【简答题】关于LPWAN技术,以下表述正确的是 A.现有的LPWAN技术均属于移动通信范畴。 B.Lora、SIGFOX、NB-IoT、Wi-Fi均属于LPWAN技术。 C.NB-IoT具有覆盖广、连接多、速率高、成本低、功耗低、架构优等特点。 D.NB-IoT是基于蜂窝的LPWAN技术,可直接部署于GSM网络、UMTS网络或LTE网络。
【简答题】采用哪些技术使NB-IOT具有深覆盖的特点?请详细描述。
【单选题】Mr. Smith usually got up late in the morning, so Mrs. Smith always called him up in order to make him not to be late for work. One day, they had a loud and long quarreling, so they were not speaking t...
【多选题】关于LPWAN技术,以下表述正确的是
A.
Lora、SIGFOX、NB-IoT、Wi-Fi均属于LPWAN技术。
C.
NB-IoT是基于蜂窝的LPWAN技术,可直接部署于GSM网络、UMTS网络或LTE网络。
D.
NB-IoT具有覆盖广、连接多、速率高、成本低、功耗低、架构优等特点。
【简答题】Mr. Smith usually got up late in the morning, so Mrs. Smith always called him up in order to make him not to be late for work. One day, they had a loud and long quarreling, so they were not speaking t...
【多选题】关于LPWAN技术,以下表述正确的是
B.
NB-IoT是基于蜂窝的LPWAN技术,可直接部署于GSM网络、UMTS网络或LTE网络。
C.
NB-IoT具有覆盖广、连接多、速率高、成本低、功耗低、架构优等特点。
D.
Lora、SIGFOX、NB-IoT、Wi-Fi均属于LPWAN技术。