皮皮学，免费搜题
登录
搜题
【简答题】
分子筛催化剂通常是酸催化剂还是碱催化剂？HZSM-5分子筛和活性氧化铝分别催化甲醇脱水生成二甲醚各有何特点？
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
【单选题】What can we learn from paragraphs 2 to 4?
A.
Instinctive behavior refers to spiders spinning their webs.
B.
Culture is something that all human beings are born with.
C.
Different cultures have different basic needs.
D.
Different cultures lead to different ways of living.
查看完整题目与答案
【单选题】What can we learn from the news?
A.
The device uses normal red light to identify possible explosives.
B.
Passengers are required to take off clothes as a part of security process.
C.
The device will show passengers' images.
D.
The machine can process one person per second.
查看完整题目与答案
【单选题】What can we learn from the Florida study?
A.
. Follow­up studies should last for one year.
B.
. Volunteers should get mentally prepared.
C.
. Strategy training is a must in research.
D.
. Volunteers are provided with concrete advice.
查看完整题目与答案
【单选题】What can we learn from the fifth paragraph?
A.
Students tend to have prejudices against other cultures.
B.
Students are keen to find a constructive way to contribute to the world.
C.
Students will live in a pluralistic society at college.
D.
Students should learn to understand and appreciate people from other cultures.
查看完整题目与答案
【单选题】What can we learn about the Financial Aid Office?
A.
It might help to solve the man’s problem.
B.
It is open to poor students.
C.
It is a place where a lot of students go and meet.
D.
It will not lend money to the man.
查看完整题目与答案
【简答题】( )( )( )是课程目标的三个来源。
查看完整题目与答案
【简答题】完成句子。 1.那个家伙声称他是镇上最好的医生。 That guy that he is the best doctor in the town. 2.她设法与我的朋友取得了联系。 She managed to with my friends. 3.我们的教室一直都保持得很干净。 We keep our classroom clean . 4.请不要和你的同学争吵。 Please don’t yo...
查看完整题目与答案
【单选题】What can we learn from the passage?
A.
We shouldn’t use plastic bottles so as to protect our environment.
B.
We should bury used plastic bottles under the ground so that they can be bio-degraded slowly.
C.
We should find ways to prevent plastic bottles from drifting into oceans.
D.
We should recycle used plastic bottles so that they can be reused.
查看完整题目与答案
【单选题】what can we learn from the conversation?
A.
It will get warmer soon.
B.
. It may get even colder.
C.
This is the coldest winter ever.
D.
The weather has never been so bad before.
查看完整题目与答案
【简答题】Comprehension questions (Paras. 1-2 ) 1. What can we learn about the author’s feelings from Para. 1? 2. What can we learn from the word “halfheartedly” in Para. 2? 3. What is the weather like in winte...
查看完整题目与答案
相关题目：
【单选题】What can we learn from paragraphs 2 to 4?
A.
Instinctive behavior refers to spiders spinning their webs.
B.
Culture is something that all human beings are born with.
C.
Different cultures have different basic needs.
D.
Different cultures lead to different ways of living.
查看完整题目与答案
【单选题】What can we learn from the news?
A.
The device uses normal red light to identify possible explosives.
B.
Passengers are required to take off clothes as a part of security process.
C.
The device will show passengers' images.
D.
The machine can process one person per second.
查看完整题目与答案
【单选题】What can we learn from the Florida study?
A.
. Follow­up studies should last for one year.
B.
. Volunteers should get mentally prepared.
C.
. Strategy training is a must in research.
D.
. Volunteers are provided with concrete advice.
查看完整题目与答案
【单选题】What can we learn from the fifth paragraph?
A.
Students tend to have prejudices against other cultures.
B.
Students are keen to find a constructive way to contribute to the world.
C.
Students will live in a pluralistic society at college.
D.
Students should learn to understand and appreciate people from other cultures.
查看完整题目与答案
【单选题】What can we learn about the Financial Aid Office?
A.
It might help to solve the man’s problem.
B.
It is open to poor students.
C.
It is a place where a lot of students go and meet.
D.
It will not lend money to the man.
查看完整题目与答案
【简答题】( )( )( )是课程目标的三个来源。
查看完整题目与答案
【简答题】完成句子。 1.那个家伙声称他是镇上最好的医生。 That guy that he is the best doctor in the town. 2.她设法与我的朋友取得了联系。 She managed to with my friends. 3.我们的教室一直都保持得很干净。 We keep our classroom clean . 4.请不要和你的同学争吵。 Please don’t yo...
查看完整题目与答案
【单选题】What can we learn from the passage?
A.
We shouldn’t use plastic bottles so as to protect our environment.
B.
We should bury used plastic bottles under the ground so that they can be bio-degraded slowly.
C.
We should find ways to prevent plastic bottles from drifting into oceans.
D.
We should recycle used plastic bottles so that they can be reused.
查看完整题目与答案
【单选题】what can we learn from the conversation?
A.
It will get warmer soon.
B.
. It may get even colder.
C.
This is the coldest winter ever.
D.
The weather has never been so bad before.
查看完整题目与答案
【简答题】Comprehension questions (Paras. 1-2 ) 1. What can we learn about the author’s feelings from Para. 1? 2. What can we learn from the word “halfheartedly” in Para. 2? 3. What is the weather like in winte...
查看完整题目与答案