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红外线探测器按照放大电路的种类不同,可以分为直流探头、调制探头两种。
A.
正确
B.
错误
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举一反三
【单选题】大多数国家包括我国在内使用的主要计税标准是( )。
A.
滑准税
B.
复合税
C.
从量税
D.
从价税
查看完整题目与答案
【简答题】用所给动词的适当形式填空。 1. The sweater ______ (be) $15. 2. It's five. Let's ______ (play) football. 3. Mum, I want ______ (have) a party this evening. 4. She ______ (have) a computer . 5. There ______ (be) ...
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【简答题】句型转换。 1. Tim has already finished reading the book. (改为否定句) Tim _________ finished reading the book _________. 2. I expect they will go to see him from time to time.(改为同义句) I expect they will go to se...
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【简答题】句型转换。 1. Tim went for a drive yesterday morning.  (改为否定句) Tim ______ ______for a drive yesterday morning. 2. Nick's day off was very boring .(就画线部分提问) ______ ______ Nick's day off? 3. They had some ni...
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【简答题】听句子，选出句子中包含的信息。 (     )1. A. desk (     )2. A. 08: 15 (     )3. A. a tidy shirt (     )4. A. Tim is a student. (     )5. A. We must finish the work at 10:00. B. test B. 07: 45 B. a white skirt B. Tim ...
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【单选题】自然界中黄连素的存在形式是（）
A.
醇式
B.
醛式
C.
铵碱式
D.
酮式
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【单选题】海水淡化装置盐度计的读数单位标示的是 。
A.
mA
B.
mV
C.
mg
D.
mg/1NaCl或ppm
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【简答题】用括号内所给动词的适当形式填空。 1. Tom and Jim _________ (do) their homework at the moment. 2. Tim usually _________ (get) up at six o'clock. 3. Be quick! Li Lei _________ (wait) for us at the school gate. 4. Han Me...
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【单选题】海水淡化装置盐度计的度数单位标示的是( )。
A.
mA
B.
mV
C.
mg
D.
10的负六次方
查看完整题目与答案
【简答题】用括号内所给动词的适当形式填空, 必要时可加助动词或情态动词。 Tim is twelve and he is a student. His father 1._____ (be) a teacher and his mother is a singer. His parents get up at six o’clock in the mourning. They 2._____ (brash)...
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相关题目：
【单选题】大多数国家包括我国在内使用的主要计税标准是( )。
A.
滑准税
B.
复合税
C.
从量税
D.
从价税
查看完整题目与答案
【简答题】用所给动词的适当形式填空。 1. The sweater ______ (be) $15. 2. It's five. Let's ______ (play) football. 3. Mum, I want ______ (have) a party this evening. 4. She ______ (have) a computer . 5. There ______ (be) ...
查看完整题目与答案
【简答题】句型转换。 1. Tim has already finished reading the book. (改为否定句) Tim _________ finished reading the book _________. 2. I expect they will go to see him from time to time.(改为同义句) I expect they will go to se...
查看完整题目与答案
【简答题】句型转换。 1. Tim went for a drive yesterday morning.  (改为否定句) Tim ______ ______for a drive yesterday morning. 2. Nick's day off was very boring .(就画线部分提问) ______ ______ Nick's day off? 3. They had some ni...
查看完整题目与答案
【简答题】听句子，选出句子中包含的信息。 (     )1. A. desk (     )2. A. 08: 15 (     )3. A. a tidy shirt (     )4. A. Tim is a student. (     )5. A. We must finish the work at 10:00. B. test B. 07: 45 B. a white skirt B. Tim ...
查看完整题目与答案
【单选题】自然界中黄连素的存在形式是（）
A.
醇式
B.
醛式
C.
铵碱式
D.
酮式
查看完整题目与答案
【单选题】海水淡化装置盐度计的读数单位标示的是 。
A.
mA
B.
mV
C.
mg
D.
mg/1NaCl或ppm
查看完整题目与答案
【简答题】用括号内所给动词的适当形式填空。 1. Tom and Jim _________ (do) their homework at the moment. 2. Tim usually _________ (get) up at six o'clock. 3. Be quick! Li Lei _________ (wait) for us at the school gate. 4. Han Me...
查看完整题目与答案
【单选题】海水淡化装置盐度计的度数单位标示的是( )。
A.
mA
B.
mV
C.
mg
D.
10的负六次方
查看完整题目与答案
【简答题】用括号内所给动词的适当形式填空, 必要时可加助动词或情态动词。 Tim is twelve and he is a student. His father 1._____ (be) a teacher and his mother is a singer. His parents get up at six o’clock in the mourning. They 2._____ (brash)...
查看完整题目与答案
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