I seem to have ____ a file by mistake. A: deleted B: deleting C: delete D: deletes

The Earth’s natural resources are___, so we must take effective measures to conserve them. A: depleting B: deleting C: deflating D: Deepening

How to achieve conciseness of sentences according to the video clip? A: Write short sentences. B: Avoid writing involved sentences. C: Deleting all the unneeded words in the sentences. D: Using the least number of words to write sentences.

Which of the following is NOT mentioned in the passage as an instance of attack by a hacker A: Deleting information in the computer's memory. B: Shutting down the computer whenever he wishes. C: Entering your house to steal. D: Spoiling a system for air traffic.

When we learn something new, we tend to store the new information by ______. A: associating it with something we have already stored B: deleting the old information in our memory C: keeping both new and old information in the brain side by side

对于如下图所示的最大堆，删除掉最大的元素后，堆的后序遍历结果是For the following maximum heap, after deleting the maximum element, the post order traversal sequence is[img=387x212]1802faee53d86da.png[/img]

对于如下图所示的最大堆，删除掉最大的元素后，堆的后序遍历结果是For the following maximum heap, after deleting the maximum element, the post order traversal sequence is[img src="https://www.chinesemooc.org/attachment/homework/pic/20151022/2367/38203181445480591.png"]

Which one of the following is not a characteristic of the linked list? ‍ A: The node in a linked list can be accessed randomly B: Inserting or deleting a node in a linked list do not need to move the other nodes C: Don't have to estimate storage space in advance D: The memory space required by a linked list is in proportion to the length of the list.

Which<br/>of the following operations is performed more efficiently by doubly<br/>linked list than by linear linked list? () A: Deleting<br/>a node whose location is given B: Searching<br/>an unsorted list for a given item C: Inserting<br/>a node after the node with a given location D: Traversing<br/>the list to process each node

Which statement is true？（） A: The time to find the value from HashMap with a Person key depends on the size of the map. B: Deleting a Person key from a HashMap will delete all map entries for all keys of type Person. C: Inserting a second Person object into a HashSet will cause the first Person object to be removed as a duplicate. D: The time to determine whether a Person object is contained in a HashSet is constant and does NOT depend on the size of the map.