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【多选题】
辐射防护体系（辐射防护基本原则）包括（）。
A.
个人剂量限量和剂量约束限量
B.
减少工作时间和对放射源进行屏蔽
C.
辐射防护与安全的最优化
D.
辐射实践正当化
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【单选题】某桥式整流电路,变压器二次侧电压为10V,则输出电压为()
A.
9V
B.
10V
C.
12V
D.
4.5V
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【简答题】完成听力D部分的填空题部分
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【单选题】完成章节部分Period 1-2 Unit 3 Weather 部分的听力选择题。 Part C Question 5
A.
They’d better change their mind about playing tennis tomorrow.
B.
They shouldn’t change their plan.
C.
They can play tennis in the morning.
D.
They won’t play tennis long.
查看完整题目与答案
【单选题】完成章节部分Period 1-2 Unit 3 Weather 部分的听力选择题。 Part B Question 2 What do you know about Alan?
A.
He thinks the department has misjudged the weather situation for the day.
B.
He dismisses the idea of having an annual picnic as silly.
C.
He dislikes pre-arranged activities and would rather go somewhere on his own.
D.
He prefers a short little sleep after drinking.
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【简答题】2012年1月至5月，我省出现了持续的阴雨低温天气，严重影响了水稻、油菜、小麦及蔬菜的生长。根据上述信息回答下列问题。 （1）很多地方水稻育秧都采用地膜覆盖技术，这是为了提高土壤 ______ ，促进秧苗生长。 （2）某蔬菜基地的水果型胡萝卜在块根膨大期因受到阴雨天气的影响，长期田间渍水，胡萝卜烂在田里。其原因主要是土壤中________ ，胡萝卜块根不能正常进行________ 。 （3）我省今...
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【单选题】完成章节部分Period 1-2 Unit 3 Weather 部分的听力选择题。 Part C Question 2
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
【单选题】完成章节部分Period 1-2 Unit 3 Weather 部分的听力选择题。 Part C Question 3
A.
The man is sure the weather will be fine soon.
B.
According to the forecast the weather will be fine soon.
C.
If it keeps raining, they will cancel what they have planned to do.
D.
If it rains hard, they will postpone what they have planned to do.
查看完整题目与答案
【单选题】完成章节部分Period 1-2 Unit 3 Weather 部分的听力选择题。 Part C Question 1
A.
Snowy and windy.
B.
Cold and rainy.
C.
Snowy and icy.
D.
Windy and rainy.
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【单选题】完成章节部分Period 1-2 Unit 3 Weather 部分的听力选择题。 Part B Question 1 Waht are Alan and Michelle mainly doing?
A.
They are planning a picnic for the department.
B.
They are wondering what the weather will be like at the annual picnic.
C.
They are discussing how to escape from the sun.
D.
They are having cold drinks and talking about the weather.
查看完整题目与答案
【单选题】完成章节部分Period 1-2 Unit 3 Weather 部分的听力选择题。 Part C Question 4
A.
It’s cold in New York now.
B.
It’s very hot in New York now.
C.
The woman thinks New York and Beijing have similar weather.
D.
The man is going to visit New York.
查看完整题目与答案
相关题目：
【单选题】某桥式整流电路,变压器二次侧电压为10V,则输出电压为()
A.
9V
B.
10V
C.
12V
D.
4.5V
查看完整题目与答案
【简答题】完成听力D部分的填空题部分
查看完整题目与答案
【单选题】完成章节部分Period 1-2 Unit 3 Weather 部分的听力选择题。 Part C Question 5
A.
They’d better change their mind about playing tennis tomorrow.
B.
They shouldn’t change their plan.
C.
They can play tennis in the morning.
D.
They won’t play tennis long.
查看完整题目与答案
【单选题】完成章节部分Period 1-2 Unit 3 Weather 部分的听力选择题。 Part B Question 2 What do you know about Alan?
A.
He thinks the department has misjudged the weather situation for the day.
B.
He dismisses the idea of having an annual picnic as silly.
C.
He dislikes pre-arranged activities and would rather go somewhere on his own.
D.
He prefers a short little sleep after drinking.
查看完整题目与答案
【简答题】2012年1月至5月，我省出现了持续的阴雨低温天气，严重影响了水稻、油菜、小麦及蔬菜的生长。根据上述信息回答下列问题。 （1）很多地方水稻育秧都采用地膜覆盖技术，这是为了提高土壤 ______ ，促进秧苗生长。 （2）某蔬菜基地的水果型胡萝卜在块根膨大期因受到阴雨天气的影响，长期田间渍水，胡萝卜烂在田里。其原因主要是土壤中________ ，胡萝卜块根不能正常进行________ 。 （3）我省今...
查看完整题目与答案
【单选题】完成章节部分Period 1-2 Unit 3 Weather 部分的听力选择题。 Part C Question 2
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
【单选题】完成章节部分Period 1-2 Unit 3 Weather 部分的听力选择题。 Part C Question 3
A.
The man is sure the weather will be fine soon.
B.
According to the forecast the weather will be fine soon.
C.
If it keeps raining, they will cancel what they have planned to do.
D.
If it rains hard, they will postpone what they have planned to do.
查看完整题目与答案
【单选题】完成章节部分Period 1-2 Unit 3 Weather 部分的听力选择题。 Part C Question 1
A.
Snowy and windy.
B.
Cold and rainy.
C.
Snowy and icy.
D.
Windy and rainy.
查看完整题目与答案
【单选题】完成章节部分Period 1-2 Unit 3 Weather 部分的听力选择题。 Part B Question 1 Waht are Alan and Michelle mainly doing?
A.
They are planning a picnic for the department.
B.
They are wondering what the weather will be like at the annual picnic.
C.
They are discussing how to escape from the sun.
D.
They are having cold drinks and talking about the weather.
查看完整题目与答案
【单选题】完成章节部分Period 1-2 Unit 3 Weather 部分的听力选择题。 Part C Question 4
A.
It’s cold in New York now.
B.
It’s very hot in New York now.
C.
The woman thinks New York and Beijing have similar weather.
D.
The man is going to visit New York.
查看完整题目与答案