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【单选题】
下列关于异步电动机的说法错误的是 。
A.
铭牌上的额定功率是指三相异步电动机额定运行状态时的输出机械功率
B.
额定电压是指电源加在定子绕组上的线电压
C.
额定电流是指电动机的相电流
D.
我国工业用电的频率为50Hz
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参考答案：
举一反三
【简答题】九江致远电子有限公司财务部门小李于2018年11月9日编制完成了上月的记账凭证,未经过财务主管审核就将其作为登记账簿的直接依据。同时,由于11月底小李出差学习一个月,小李临时找到出纳小张代其保管各类会计档案,并且办理了交接手续。 要求:请指出上述的不当之处,并简要说明理由。
查看完整题目与答案
【单选题】Jill: Jack, do you manage to continue playing sports? Jack: No. By the time I get home at night, it is always too late to do any training. Besides, I always have so much homework to do. Why does Jack ...
A.
He is too busy.
B.
He has lost the interest.
C.
The training is too hard.
D.
He always has so much housework to do.
查看完整题目与答案
【单选题】What is the main purpose for holding such a special contest?
A.
To encourage hackers to attack big companies.
B.
To knock some unsecured websites offline.
C.
To get some analysis data for preventing attacks.
D.
To prove hacker's professional skills on computer.
查看完整题目与答案
【单选题】It's implied that ______.
A.
nuclear power stations may become the targets of terrorist attack
B.
Carbon dioxide is the principal source of greenhouse gas
C.
The Bush administration doesn't give due weight to environment protection
D.
Nuclear waste will turn to be an environmental threat in the long-run term
查看完整题目与答案
【单选题】According to Paragraph 5, when followed by geese, a fox will______.
A.
be irritated and attack the geese
B.
run away at once and in a frightened way
C.
move slowly away so as not to lose face
D.
stop in front of the geese and facing them
查看完整题目与答案
【单选题】Which of the following statements is NOT mentioned in the passage?
A.
Malaria is under attack in a number of countries.
B.
Some types of mosquitoes have become resistant to the current sprays.
C.
New poisons have been put into wide use with the new science.
D.
One of human's challenges is to win the campaigns against mosquitoes.
查看完整题目与答案
【简答题】根据句意和首字母提示每空填一个单词，使句意完整。 1. Jack plays sports every day, so he is very h_______. 2. Jane t_______ her mother is at home now. 3. My father is very s_______ with me. 4. What do you o_______ do? 5. We ar...
查看完整题目与答案
【单选题】下列数字中有效数字位数为4位的是（ ）。
A.
1203.0
B.
0.0245
C.
pH=4.451
D.
11.40%
查看完整题目与答案
【简答题】根据句意及单词的首字母完成句子。 1. Jack is always late for schoo1,so his teacher is m at him. 2. He left a m on the table. Did you see it? 3. What other l sides Chinese? 4. She said she was having a s party for her ...
查看完整题目与答案
【单选题】Jack is late, so he decided to get up _____ the next day.
A.
earlier
B.
more earlier
C.
much early
D.
early
查看完整题目与答案
相关题目：
【简答题】九江致远电子有限公司财务部门小李于2018年11月9日编制完成了上月的记账凭证,未经过财务主管审核就将其作为登记账簿的直接依据。同时,由于11月底小李出差学习一个月,小李临时找到出纳小张代其保管各类会计档案,并且办理了交接手续。 要求:请指出上述的不当之处,并简要说明理由。
查看完整题目与答案
【单选题】Jill: Jack, do you manage to continue playing sports? Jack: No. By the time I get home at night, it is always too late to do any training. Besides, I always have so much homework to do. Why does Jack ...
A.
He is too busy.
B.
He has lost the interest.
C.
The training is too hard.
D.
He always has so much housework to do.
查看完整题目与答案
【单选题】What is the main purpose for holding such a special contest?
A.
To encourage hackers to attack big companies.
B.
To knock some unsecured websites offline.
C.
To get some analysis data for preventing attacks.
D.
To prove hacker's professional skills on computer.
查看完整题目与答案
【单选题】It's implied that ______.
A.
nuclear power stations may become the targets of terrorist attack
B.
Carbon dioxide is the principal source of greenhouse gas
C.
The Bush administration doesn't give due weight to environment protection
D.
Nuclear waste will turn to be an environmental threat in the long-run term
查看完整题目与答案
【单选题】According to Paragraph 5, when followed by geese, a fox will______.
A.
be irritated and attack the geese
B.
run away at once and in a frightened way
C.
move slowly away so as not to lose face
D.
stop in front of the geese and facing them
查看完整题目与答案
【单选题】Which of the following statements is NOT mentioned in the passage?
A.
Malaria is under attack in a number of countries.
B.
Some types of mosquitoes have become resistant to the current sprays.
C.
New poisons have been put into wide use with the new science.
D.
One of human's challenges is to win the campaigns against mosquitoes.
查看完整题目与答案
【简答题】根据句意和首字母提示每空填一个单词，使句意完整。 1. Jack plays sports every day, so he is very h_______. 2. Jane t_______ her mother is at home now. 3. My father is very s_______ with me. 4. What do you o_______ do? 5. We ar...
查看完整题目与答案
【单选题】下列数字中有效数字位数为4位的是（ ）。
A.
1203.0
B.
0.0245
C.
pH=4.451
D.
11.40%
查看完整题目与答案
【简答题】根据句意及单词的首字母完成句子。 1. Jack is always late for schoo1,so his teacher is m at him. 2. He left a m on the table. Did you see it? 3. What other l sides Chinese? 4. She said she was having a s party for her ...
查看完整题目与答案
【单选题】Jack is late, so he decided to get up _____ the next day.
A.
earlier
B.
more earlier
C.
much early
D.
early
查看完整题目与答案
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