皮皮学，免费搜题
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搜题
【单选题】
三相桥式整流电路输出的平均电压一个期中有( )脉动。A.
1
B.
2
C.
3
D.
6
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参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【简答题】中国画的画家往往只画山水一个局部、花果的一支,画中有大量的________。
【单选题】In Paragraph 7, Detroit Journal depicts Ford as a______.
A.
genius scientist
B.
automobile engineer
C.
mechanical engineer
D.
auto-industry founder
【简答题】A muchos ____________(消费者) les gusta esta lavadora automática.
【单选题】厚角组织与厚壁组织的差别,属于厚壁组织的是( ) 。
A.
死细胞，壁均匀地次生加厚；
B.
活细胞，壁均匀地次生加厚；
C.
死细胞，壁均匀地初生加厚；
D.
活细胞，壁均匀地初生加厚
【单选题】It can be inferred from the passage that ______.
A.
people are more interested in fast automobiles than in their health
B.
Americans feel more closely tied to their cars than to their wives
C.
keroseneburning engines would pollute the environment more than gasolineburning engines do
D.
keroseneburning cars would go faster than gasolinepowered cars
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