皮皮学，免费搜题
登录
logo - 刷刷题
搜题
【简答题】
一质点在力场F作用下由点A(2，2，1)沿直线移动到点B(4，4，2)，求F所做的功。已知F的方向指向坐标原点，其大小与作用点到xOy平面的距离成反比
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
微信内点击右上角“…”即可分享
反馈
参考答案：
举一反三
【单选题】听力原文：M: Hello. W: Hello, Roger? This is Ann. M: Oh hi, Ann. How have you been? And how's your new apartment working out? W: Well, that's what I'm calling about. You see, I've decided to look for a new...
A.
Problems with living in an apartment.
B.
A search for a new apartment.
C.
The cost of rent near universities.
D.
Furnishing an apartment.
查看完整题目与答案
【单选题】建筑外墙防水工程技术规程（JGJ/T235-2011）外墙防水层完工后应进行检查验收，防水层渗漏检查应在雨后或持续淋雨（）后进行
A.
30min
B.
45min
C.
1h
D.
2h
查看完整题目与答案
【单选题】听力原文：W: Good morning, this is Ann broadcasting from university radio and in the studio we have Robin, president of the Martha Bicycle Club with us. M: Good morning, everyone. W: Robin, can you tell us...
A.
In the radio studio.
B.
In the bicycle shop.
C.
On the road.
查看完整题目与答案
【多选题】防水层完工后,应在雨后或持续淋水2h后,检查屋面( ),施工质量符合要求方可进行防水层验收
A.
有无裂缝
B.
有无渗漏
C.
排气系统是否通畅
D.
积水系统是否畅通
E.
排水系统是否畅通
查看完整题目与答案
【单选题】外墙防水层完工后应进行检查验收，防水层渗漏检查应在雨后或持续淋雨（）后进行。
A.
30min
B.
45min
C.
1h
D.
2h
查看完整题目与答案
【单选题】想要了解中国知识分子可以阅读中国古代作品()。
A.
《红楼梦》
B.
《儒林外史》
C.
《金瓶梅》
D.
《三国演义》
查看完整题目与答案
【单选题】听力原文： Ann Richards was a famous Democratic Party politician from the southern state of Texas.She served as the governor of Texas for four years.Richards was known for he big white hair,big smile,and s...
A.
She was famous for her sharply funny comments.
B.
She served as the governor of Texas for 2 years.
C.
She helped black people to get their rights.
D.
She worked as a teacher of four students.
查看完整题目与答案
【单选题】听力原文：M: Hello. W: Hello Roger? This is Ann. M: Hi, Ann. How have you been? And bow's your new apartment? W: Well, that's what I'm calling about. You see, I've decided to look for a new place. M: Oh, w...
A.
To find out what he thinks of her apartment.
B.
To complain about her new roommate.
C.
To help the man find a new apartment.
D.
To ask the man to help her find an apartment.
查看完整题目与答案
【单选题】听力原文：(Man—Peter Woman—Ann) M: Hi, Ann, let's start planning the office Christmas party. W: Good idea! M: First, Ann, do you know how many people will come? W: Well, last year two people didn't come an...
A.
Classmates.
B.
Colleagues.
C.
Neighbors.
D.
Best friends.
查看完整题目与答案
【单选题】屋面防水层完工后，应在雨后或持续淋水（）h后，检查屋面有无渗漏、积水和排水系统是否畅通，施工质量符合要求方可进行防水层验收。
A.
1
B.
2
C.
3
D.
4
查看完整题目与答案
相关题目：
【单选题】听力原文：M: Hello. W: Hello, Roger? This is Ann. M: Oh hi, Ann. How have you been? And how's your new apartment working out? W: Well, that's what I'm calling about. You see, I've decided to look for a new...
A.
Problems with living in an apartment.
B.
A search for a new apartment.
C.
The cost of rent near universities.
D.
Furnishing an apartment.
查看完整题目与答案
【单选题】建筑外墙防水工程技术规程（JGJ/T235-2011）外墙防水层完工后应进行检查验收，防水层渗漏检查应在雨后或持续淋雨（）后进行
A.
30min
B.
45min
C.
1h
D.
2h
查看完整题目与答案
【单选题】听力原文：W: Good morning, this is Ann broadcasting from university radio and in the studio we have Robin, president of the Martha Bicycle Club with us. M: Good morning, everyone. W: Robin, can you tell us...
A.
In the radio studio.
B.
In the bicycle shop.
C.
On the road.
查看完整题目与答案
【多选题】防水层完工后,应在雨后或持续淋水2h后,检查屋面( ),施工质量符合要求方可进行防水层验收
A.
有无裂缝
B.
有无渗漏
C.
排气系统是否通畅
D.
积水系统是否畅通
E.
排水系统是否畅通
查看完整题目与答案
【单选题】外墙防水层完工后应进行检查验收，防水层渗漏检查应在雨后或持续淋雨（）后进行。
A.
30min
B.
45min
C.
1h
D.
2h
查看完整题目与答案
【单选题】想要了解中国知识分子可以阅读中国古代作品()。
A.
《红楼梦》
B.
《儒林外史》
C.
《金瓶梅》
D.
《三国演义》
查看完整题目与答案
【单选题】听力原文： Ann Richards was a famous Democratic Party politician from the southern state of Texas.She served as the governor of Texas for four years.Richards was known for he big white hair,big smile,and s...
A.
She was famous for her sharply funny comments.
B.
She served as the governor of Texas for 2 years.
C.
She helped black people to get their rights.
D.
She worked as a teacher of four students.
查看完整题目与答案
【单选题】听力原文：M: Hello. W: Hello Roger? This is Ann. M: Hi, Ann. How have you been? And bow's your new apartment? W: Well, that's what I'm calling about. You see, I've decided to look for a new place. M: Oh, w...
A.
To find out what he thinks of her apartment.
B.
To complain about her new roommate.
C.
To help the man find a new apartment.
D.
To ask the man to help her find an apartment.
查看完整题目与答案
【单选题】听力原文：(Man—Peter Woman—Ann) M: Hi, Ann, let's start planning the office Christmas party. W: Good idea! M: First, Ann, do you know how many people will come? W: Well, last year two people didn't come an...
A.
Classmates.
B.
Colleagues.
C.
Neighbors.
D.
Best friends.
查看完整题目与答案
【单选题】屋面防水层完工后，应在雨后或持续淋水（）h后，检查屋面有无渗漏、积水和排水系统是否畅通，施工质量符合要求方可进行防水层验收。
A.
1
B.
2
C.
3
D.
4
查看完整题目与答案
参考解析：
知识点：
题目纠错 0
发布
创建自己的小题库 - 刷刷题