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【单选题】
用原子吸收光谱法测定有害元素汞时,采用的原子化方法是( )。
A.
火焰原子化法
B.
石墨炉原子化法
C.
氯化物原子化法
D.
低温原子化法
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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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【单选题】L、C串并联回路的谐振条件是（）
A.
L＝C
B.
XL＝XC
C.
Z＝r
D.
ωC＝ωL＝0
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【简答题】L、C串联回路的谐振条件是（）。
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【单选题】Na 2 O 2 在碱性条件下可体现出很强的经()
A.
还原性
B.
氧化性
C.
吸水性
D.
脱水性
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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 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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【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.
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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.
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【单选题】L、C串并联回路的谐振条件是
A.
L=C
B.
XL=XC
C.
Z=r
D.
ωL=ωC=0
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【单选题】LC串联回路的谐振条件是（）。
A.
L = C
B.
X l = X c
C.
Z = Y
D.
W l =W c = 0
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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 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.
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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
【单选题】L、C串并联回路的谐振条件是（）
A.
L＝C
B.
XL＝XC
C.
Z＝r
D.
ωC＝ωL＝0
查看完整题目与答案
【简答题】L、C串联回路的谐振条件是（）。
查看完整题目与答案
【单选题】Na 2 O 2 在碱性条件下可体现出很强的经()
A.
还原性
B.
氧化性
C.
吸水性
D.
脱水性
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
【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 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】L、C串并联回路的谐振条件是
A.
L=C
B.
XL=XC
C.
Z=r
D.
ωL=ωC=0
查看完整题目与答案
【单选题】LC串联回路的谐振条件是（）。
A.
L = C
B.
X l = X c
C.
Z = Y
D.
W l =W c = 0
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