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【单选题】
Can someone call ______________? The email network has gone down again.A.
lab technicians
B.
marketing team
C.
sales department
D.
IT support
手机使用
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新浪微博
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反馈参考答案：
举一反三
【简答题】Photoshop 中常用的图层类型包括普通图层、 、 、调整图层和效果图层 5 种。
【单选题】Which statement is true for the class java.util.HashSet？（）
A.
The elements in the collection are ordered.
B.
The collection is guaranteed to be immutable.
C.
The elements in the collection are guaranteed to be unique.
D.
The elements in the collection are accessed using a unique key.
E.
The elements in the collections are guaranteed to be synchronized.
【单选题】The word 'rankled' (Para. 3) probably means______.
A.
interested
B.
angered
C.
pleased
D.
consoled
【单选题】Which of the following statement is correct for java.Util.HashSet?
A.
Elements is ordered in a Set.
B.
Set is never changed.
C.
The elements in the collection are guaranteed to be unique.
D.
Accessing elements in a Set by a unique key.
【单选题】Which statement is true for the class java.util.ArrayList？（）
A.
The elements in the collection are ordered.
B.
The collection is guaranteed to be immutable.
C.
The elements in the collection are guaranteed to be unique.
D.
The elements in the collection are accessed using a unique key.
E.
The elements in the collections are guaranteed to be synchronized.
【简答题】阅读下面有关手机的材料，并回答问题。 手机是部集成度很高的微型高精密接收和发射高频电磁波的机器．大致可分为五个部分：听筒、话筒、控制模组、天线及电源，采用双向异频率双工制，即接收和发射用不同频率的调频电磁波．根据国家标准局和有关方面的规定，某机发射频率890.0125MHz ，接收频率为935.0125MHz ，双频间隔为45MHz ．用户在某个交换局的业务服务区购机，并配定使用频率和编码后，就成...
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