青书学堂题库

青书学堂题库

【标准答案】‍ZigBee常用的网络拓扑结构有哪些？

#A.线性结构#B.网状型#C.树型#D.星型
查看详情 +
【标准答案】—Your request for compensation made me surprised. What happened? —

#A.It’s true.#B.It’s because of the quality.#C.There must be something wrong.
查看详情 +
【标准答案】—Your plan is perfect and I believe that it will be a great success . —________________

#A.Yes, it is.#B.Thank youvery much.#C.I don’t think so.
查看详情 +
【标准答案】your plan and don't stop until it is finished.

#A.Stick#B.Follow#C.Insist
查看详情 +
【标准答案】Your friend is forgetful and often forgets to ________ assignments.

#A.slide#B.subtitle#C.submit
查看详情 +
【标准答案】your check is received within a week we shall have no alternative.

#A.Unless#B.As#C.If
查看详情 +
【标准答案】按国家行业标准，四星及四星级以上酒店客房必须配备小型冰箱，并在冰箱里放置各种常用饮料，以满足宾客对酒水饮料的需求。

#A.对#B.错
查看详情 +
【标准答案】按国家环境保护局公布的 (环境监测技术规范)规定，凡饮用水源、湖、库，每月采样（）次，每年（）次。

#A.1,12#B.2,11#C.1,10#D.2,12
查看详情 +
【标准答案】按故障影响性质可分为功能故障和

#A.参数故障#B.实际故障#C.潜在故障#D.部分故障
查看详情 +
【标准答案】按故障发生与否，维修可分为预防性维修和

#A.视情维修#B.定期维修#C.故障维修#D.原位维修
查看详情 +

TOP