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【单选题】
三极管作为开关时工作区域是( )
A.
饱和区和放大区
B.
击穿区和截止区
C.
放大区和击穿区
D.
饱和区和截止区
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举一反三
【单选题】古人洗衣服时，一般使用（）浸泡的溶液，其中含有碳酸钾，能去污。
A.
碳酸钠
B.
豆粉
C.
香樟叶
D.
草木灰
查看完整题目与答案
【简答题】实验室里，欲从草木灰中除去不溶性的固体杂质来提取固体碳酸钾． （1）此实验操作顺序为①称量样品；②溶解、沉淀；③______；④______． （2）用托盘天平称量样品时，若指针偏向右边，则表示______． A、左盘重、样品轻B、左盘轻、砝码重 C、右盘重，砝码轻D、右盘轻、样品重 （3）第③步操作，有时可能重复进行，这是由于______． （4）在进行第四步操作时，要用玻璃棒不断小心搅拌液体，...
查看完整题目与答案
【单选题】墨子有言:“志不强者智不达”,这句话的含义是( )
A.
立志当高远
B.
立志做大事
C.
立志当躬行
D.
立志当尽早
查看完整题目与答案
【单选题】草木灰中含 有()能去污
A.
碳酸钾
B.
硫酸钾
C.
碳酸钙
D.
磷酸钾
查看完整题目与答案
【单选题】According to the reading passage, the Internet is enabling collaboration through crowdsourcing. How does it work?
A.
a. A small group of people connected to the Internet work together on a project.
B.
b. A large group of people connected to the Internet contribute toward a shared goal.
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【简答题】The forwarder can monitor the movement of goods on behalf of the consignee whe the consignee controls the freight.
查看完整题目与答案
【单选题】Whe and where to build the new factory ______ yet.
A.
is not decided          
B.
are not decided     
C.
has notdecided         
D.
.have notdecided
查看完整题目与答案
【单选题】Which is not a benefit of crowdsourcing?
A.
low-cost problem analysis
B.
quick solutions
C.
unique ideas generated
D.
lack of customer loyalty
查看完整题目与答案
【单选题】A shortage results whe
A.
a binding price ceiling is imposed.
B.
a binding price floor is imposed.
C.
a price ceiling is imposed but it is not binding.
D.
a price floor is imposed but it is not binding.
查看完整题目与答案
【单选题】The __________ question for him is to ________ whether bees could tell each other the exact position of a feeding place.
A.
remaining find out
B.
remained find out
C.
remaining find 
D.
remained look for
查看完整题目与答案
相关题目：
【单选题】古人洗衣服时，一般使用（）浸泡的溶液，其中含有碳酸钾，能去污。
A.
碳酸钠
B.
豆粉
C.
香樟叶
D.
草木灰
查看完整题目与答案
【简答题】实验室里，欲从草木灰中除去不溶性的固体杂质来提取固体碳酸钾． （1）此实验操作顺序为①称量样品；②溶解、沉淀；③______；④______． （2）用托盘天平称量样品时，若指针偏向右边，则表示______． A、左盘重、样品轻B、左盘轻、砝码重 C、右盘重，砝码轻D、右盘轻、样品重 （3）第③步操作，有时可能重复进行，这是由于______． （4）在进行第四步操作时，要用玻璃棒不断小心搅拌液体，...
查看完整题目与答案
【单选题】墨子有言:“志不强者智不达”,这句话的含义是( )
A.
立志当高远
B.
立志做大事
C.
立志当躬行
D.
立志当尽早
查看完整题目与答案
【单选题】草木灰中含 有()能去污
A.
碳酸钾
B.
硫酸钾
C.
碳酸钙
D.
磷酸钾
查看完整题目与答案
【单选题】According to the reading passage, the Internet is enabling collaboration through crowdsourcing. How does it work?
A.
a. A small group of people connected to the Internet work together on a project.
B.
b. A large group of people connected to the Internet contribute toward a shared goal.
查看完整题目与答案
【简答题】The forwarder can monitor the movement of goods on behalf of the consignee whe the consignee controls the freight.
查看完整题目与答案
【单选题】Whe and where to build the new factory ______ yet.
A.
is not decided          
B.
are not decided     
C.
has notdecided         
D.
.have notdecided
查看完整题目与答案
【单选题】Which is not a benefit of crowdsourcing?
A.
low-cost problem analysis
B.
quick solutions
C.
unique ideas generated
D.
lack of customer loyalty
查看完整题目与答案
【单选题】A shortage results whe
A.
a binding price ceiling is imposed.
B.
a binding price floor is imposed.
C.
a price ceiling is imposed but it is not binding.
D.
a price floor is imposed but it is not binding.
查看完整题目与答案
【单选题】The __________ question for him is to ________ whether bees could tell each other the exact position of a feeding place.
A.
remaining find out
B.
remained find out
C.
remaining find 
D.
remained look for
查看完整题目与答案