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【简答题】
已知 V =20V,V =-40V, 则 V =__________ V ; V =20V,V =-10v, 则 V =_________V 。
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【单选题】什么是蓝牙低功耗“从设备延迟(Slave latency)”?
A.
一个 BLE 网络中从设备的最大数目
B.
从设备进入睡眠状态之前所花费的时间
C.
在连接将被终止之前从设备能够处于睡眠状态的 BLE 连接间隔的数目
D.
BLE 从设备被唤醒所需花费的时
【简答题】Read the following paragraph, and 1. Find out the topic sentence; This term several useful and interesting courses have been offered. An introduction to European Culture, for instance, gives us a lot ...
【单选题】关于蓝牙低功耗“从设备延迟(Slave latency)”,下面哪一种陈述是正确的?
A.
当有较多的 BLE 从设备连接至一部主设备时，则从设备延迟较长
B.
从设备延迟在连接建立之后不能改变
C.
从设备延迟可长达 499*4 秒（大约 33 分钟）
D.
从设备延迟介于 0 秒和 499 秒之间
【单选题】What is the following paragraph composed of ? Birds use many different materials to build nests. Some birds use bits of grass. The tailor-bird of Africa and India uses grass to sew leaves together. Ot...
A.
the topic sentence, supporting sentences, and the concluding sentence
B.
the topic sentence and supporting sentences
【简答题】馒头销售总金额D60等于_______
【单选题】下列哪一项不是食管癌手术禁忌证
A.
全身情况差，已呈恶病质
B.
有严重心、肺或肝肾功能不全者
C.
病变侵犯范围大，已有明显外侵及穿孔征象
D.
已有远处转移
E.
病程较长，有梗阻者
【判断题】Meditation can reduce blood pressure, so those with high blood pressure should use meditation instead of medication.
A.
正确
B.
错误
【简答题】A．Lung cancer. B．High blood pressure. C．. D．High fever.
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