皮皮学，免费搜题
登录
搜题
【单选题】
Z12-01-01. 如图所示导线框a, b, c, d置于均匀磁场中( 的方向竖直向上), 线框可绕AB轴转动.导线通电时,转过 角后,达到稳定平衡,如果导线改用密度为原来 的材料做,欲保持原来的稳定平衡位置(即 不变), 可以采用哪一种办法? (导线是均匀的) Z12-01-01图
A.
将磁场 减为原来的 或线框中电流强度减为原来的 .
B.
将导线的bc部分长度减小为原来的 .
C.
将导线ab和cd部分长度减小为原来的 .
D.
将磁场 减少 , 线框中电流强度减少 .
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
.
..
皮皮学刷刷变学霸
举一反三
【判断题】法律关系由主体、客体、内容三要素构成
A.
正确
B.
错误
查看完整题目与答案
【单选题】_________ many times, she still can’t remember it.
A.
Had told
B.
Having been told
C.
Having told
D.
Being told
查看完整题目与答案
【简答题】听句子，选择正确的单词或词组完成句子。 1. You have _____ hair. A. long B. short C. small 2. The boy _____ a big face. A. is B. have C. has 3. Nice to _____ you. A. see B. meet C. thank 4. Good _____, Maria. A. morning B...
查看完整题目与答案
【单选题】Why can't the woman remember if she had returned the books?
A.
It happened too long ago.
B.
She was too busy to return the books.
C.
She gave the books to the landlord.
D.
The landlord didn't remember to return the books.
查看完整题目与答案
【简答题】I've redone this math problem at least twenty times, but my answer is wrong according to the answer key. The answer in the book ______ be wrong!(have to/ should /must)
查看完整题目与答案
【单选题】She can't remember the date__she was born on
A.
where
B.
when
C.
that
查看完整题目与答案
【单选题】— You must have had a good time at the party last night,didn't you? — ________. Actually, it was a bit boring. [     ]
A.
Oh,great
B.
I suppose so
C.
Not really
D.
That's OK
查看完整题目与答案
【判断题】经济法律关系由主体、客体、内容三要素构成。()
A.
正确
B.
错误
查看完整题目与答案
【单选题】She looks very _____ but I can’t remember her name.
A.
similar
B.
familiar
C.
friendly
D.
strange
查看完整题目与答案
【简答题】完形填空。 How are you, Pin? I'm writing a letter 1 you in my school. It's a big middle 2 . I'm in a big class. There're fifty students in my class. There are about three hundred teachers in my school. My ...
查看完整题目与答案
相关题目：
【判断题】法律关系由主体、客体、内容三要素构成
A.
正确
B.
错误
查看完整题目与答案
【单选题】_________ many times, she still can’t remember it.
A.
Had told
B.
Having been told
C.
Having told
D.
Being told
查看完整题目与答案
【简答题】听句子，选择正确的单词或词组完成句子。 1. You have _____ hair. A. long B. short C. small 2. The boy _____ a big face. A. is B. have C. has 3. Nice to _____ you. A. see B. meet C. thank 4. Good _____, Maria. A. morning B...
查看完整题目与答案
【单选题】Why can't the woman remember if she had returned the books?
A.
It happened too long ago.
B.
She was too busy to return the books.
C.
She gave the books to the landlord.
D.
The landlord didn't remember to return the books.
查看完整题目与答案
【简答题】I've redone this math problem at least twenty times, but my answer is wrong according to the answer key. The answer in the book ______ be wrong!(have to/ should /must)
查看完整题目与答案
【单选题】She can't remember the date__she was born on
A.
where
B.
when
C.
that
查看完整题目与答案
【单选题】— You must have had a good time at the party last night,didn't you? — ________. Actually, it was a bit boring. [     ]
A.
Oh,great
B.
I suppose so
C.
Not really
D.
That's OK
查看完整题目与答案
【判断题】经济法律关系由主体、客体、内容三要素构成。()
A.
正确
B.
错误
查看完整题目与答案
【单选题】She looks very _____ but I can’t remember her name.
A.
similar
B.
familiar
C.
friendly
D.
strange
查看完整题目与答案
【简答题】完形填空。 How are you, Pin? I'm writing a letter 1 you in my school. It's a big middle 2 . I'm in a big class. There're fifty students in my class. There are about three hundred teachers in my school. My ...
查看完整题目与答案