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【单选题】
Consider an implementation of unsorted singly linked list. Suppose it has representation which a head pointer only. Given the representation, which of the following operation can be implemented in O(1) time? (I). Insertion at the front of the linked list. (II). Insertion at the end of the linked list. (III). Deletion of the front node of the linked list. (IV). Deletion of the last node of the linked list.A.
I and II
B.
I and III
C.
I, II, and III
D.
I, II, and IV
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【单选题】Sadly, as spending on private gardens has _________, spending on public parks has generally declined.
A.
lifted
B.
flown
C.
heightened
D.
soared
【单选题】Sadly, as spending on private gardens had ________, spending on public parks has generally declined.
A.
heightened
B.
lifted
C.
flown
D.
soared
【单选题】在设计印制电路板的时候，下面哪一项不符合布局规则要求
A.
在通常条件下，所有的元件均应布置在印制电路的同一面上，只有在顶层元件过密时，才能将一些高度有限并且发热量小的器件，如贴片电阻、贴片电容、贴片 IC 等放在底层。
B.
在保证电气性能的前提下，元件应放置在网格上且相互平行或垂直排列，以求整齐、美观，一般情况下不允许元件重叠；元件排列要紧凑，输入和输出元件尽量远离。
C.
某元器件或导线之间可能存在较高的电位差，应加大它们的距离，以免因放电、击穿而引起意外短路。
D.
带高电压的元件应尽量布置在调试时手易触及的地方。
【单选题】Sadly, as spending on private gardens has _______, spending on public parks has generaly declined.
A.
heightened
B.
lifted
C.
flown
D.
soared
【单选题】skimming and scanning.mp4 Task A: Skim the text by following the steps and tips in the box on the previous slide. Task B: Without looking back at the text, choose the best answer to complete each ...
A.
the future prospects
B.
the present situation
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