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【单选题】
可选用主动式红外入侵探测器、遮挡式微波入侵探测器、振动入侵探测器、激光式探测器、光纤式探测器、振动电缆探测器、泄漏电缆探测器、电场感应式探测器、高压电子脉冲式探测器等的是（）。A.
规则的外
B.
不规则的外
C.
无围墙/围栏的外
D.
内
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】汽车数字式示波器( )。 A、波形轨迹为即时状态 B、显示比模拟式示波器快 C、图像不可以保存记录 D、图像比较稳定,不会闪烁
A.
选择1
B.
选择2
C.
选择3
D.
选择4
【单选题】What happens at the age of two and a half?
A.
Some children become a lot more emotional.
B.
Parents change the way they discipline their children.
C.
Some children become very aware of their environment.
D.
Some children remain empathic while others don't.
【简答题】混合式学习设计的焦点是学生和 ，而不是技术。
【单选题】—_____ does he meet his friends? —_____ a month. A.How often; Twice B.How long; Twice C.When; Two D.What time; Two
A.
How often ;Twice
B.
How long ;Twice
C.
When ;Two
D.
What time ;Two
【单选题】What are the two speakers doing?
A.
Playing a ball game.
B.
Cheering for Oxford.
C.
Watching a football match.
【单选题】what is the possible relationship between the two speakers?
A.
Teacher and student
B.
Doctor and patient
C.
Manager and office worker
D.
Policeman and driver
【简答题】Technology will continue to advance and change, and you must _________ learn.
【单选题】If you want to advance yourself in your studies, you will first have to ________ yourself of those shortcomings that can become barriers to progress.
A.
remove
B.
react
C.
rid
D.
reduce
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