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[判断题]

在Navigation Stack中，全局和局部的路径规划器都是作为move_base的插件存在。（)

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更多“在Navigation Stack中，全局和局部的路径规划器…”相关的问题

第1题

下面的程序用来从键盘重复接收一个字符送入BUF开始的单元，直到接收到行结束标志0DH。在程序中填空，保证其正

确运行。

STACK SEGMENT STACK

DW 32DUP()

STACK ENDS

DATA SEGMENT

BUF DB 50()

DATA ENDS

CODE SEGMENT

START PROC FAR

ASSUME CS：CODE，DS：DATA，SS：STACK

MOV AX，DATA

MOV DS，AX

LEA SI，BUF

(1)

CON：

INT 21H

MOV [SI]，AL

INC SI

(2)

JNE CON

MOV AX，4C00H

INT 21H

START ENDP

CODE ENDS

END START

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第2题

下面的程序用来从键盘重复接收一个字符送入BUF开始的单元，直到接收到行结束标志ODH。在程序中填空，以保证其

正确运行。

STACK SEGMENT STACK

DW 32 DUP()

STACK ENDS

DATA SEGMENT

BUF DB 50()

DATA ENDS

CODE SEGMENT

START PROC FAR

ASSUME CS: CODE, DS: DATA, SS: STACK

MOV AX, DATA

MOV DS, AX

LEA SI, BUF

[1]

CON:

INT 2IH

MOV [SI]，AL

INC SI

[2]

JNE CON

MOV AX, 4COOH

INT 2IH

START ENDP

CODE ENDS

END START

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第3题

A．navigationB．mysteryC．outcomeD．destination

A.navigation

B.mystery

C.outcome

D.destination

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第4题

Which of the following is NOT mentioned in the passage concerning the expedition？A．Lack of

Which of the following is NOT mentioned in the passage concerning the expedition？

A．Lack of navigation equipment.

B．Severe winter in Patagonia.

C．The death of Magellan.

D．Dangers from rocks and storms.

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第5题

Navigation中将已知地图做成Topic来发布的软件包是（)。

A.map_server

B.map_saver

C.robot_map

D.AMCL

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第6题

The author points out that the Greeks who studies conic section ______.A．were unaware of t

The author points out that the Greeks who studies conic section ______.

A．were unaware of the value of their studies

B．were mathematicians

C．resigned

D．were interested in navigation

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第7题

An appropriate title for this passage would be ______. （)A．Rendezvous in SpaceB．Landing a

An appropriate title for this passage would be ______. ()

A．Rendezvous in Space

B．Landing at a Space Station

C．New Radar for the Space Age

D．Space Navigation

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第8题

编程用链表方法实现堆栈数据结构。堆栈(Stack) 是指这样一段内存，它可以理解为一个筒结构，先

编程用链表方法实现堆栈数据结构。堆栈（Stack) 是指这样一段内存，它可以理解为一个筒结构，先

放进筒中的数据被后放进筒中的数据“压住”，只有放进筒中的数据都取出后，先放进去的数据才能被取出，称为“后进先出”。堆栈的长度可随意增加。堆栈结构可用链表实现。设计一个链表结构需包含两个成员：一个存放数据，一个为指向下一个节点的指针。当每次有一个新数据要放入堆栈时，称为“压入堆栈”，这时动态建立一个链表的节点，并连接到链表的结尾;当每次从堆栈中取出一个数据时.称为“弹出堆栈”，这意味着从链表的最后一个节点中取出该节点的数据成员，同时删除该节点，释放该节点所占的内存。

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第9题

MPLS标签位于链路层包头和网络层分组之间，标签组成共有4个域，以下哪个不是Label所有的域（)。

A.Label

B.TOS

C.Exp

D.Stack

E.TTL

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第10题

MPLS报文头中stack比特值为0表示：（)。

A.这是最后一个标签

B.标签栈里有只有一个标签

C.TTL超时，需要弹出标签

D.标签栈里有其他标签

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第11题

Researchers have found that migrating animals use a variety of inner compasses to help the

m navigate. Some (1)_____ by the position of the Sun. Others navigate by the stars. Some use the Sun as (2)_____ guide during the day, and then (3)_____ to star navigation by night. One study shows that the homing pigeon uses the Earth's magnetic fields as a guide (4)_____ finding its way home, and there are indications that various other animals, from insects to mollusks (软体动物), can also make (5)_____ of magnetic compasses. (6)_____ is of course very useful for a migrating bird to be able to switch to magnetic compass when clouds cover the sun; (7)_____ it Would just have to land and wait for the Sun to come out again. (8)_____ with the Sun or stars to steer by, the problems of navigation are more complicated (9)_____ they might seem at first. For example, a worker honeybee (10)_____ has found a rich source of nectar and pollen flies rapidly home to the hive to (11)_____: A naturalist has discovered that the bee scout (12)_____ her report through complicated dance in the hive, (13)_____ she tells the other workers not only how far away the food is, but also what direction to fly in (14)_____ to the Sun. (15)_____ the Sun does not stay in one place all day. As the workers start (16)_____ to gather the food, the Sun may (17)_____ have changed its position in the sky somewhat. In later trips during the day, the Sun seems to move farther and farther toward the west. Yet the worker bees seem to have no (18)_____ at all in finding the food source. Their inner (19)_____ tell them just where the Sun will be, and they change their course (20)_____.

A．move

B．fly

C．steer

D．swim

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