单选题:在11名工中。有5人只能当钳工,4人只能当车工,另外2人能当钳工也能当车工。现从11人中选出4人当钳工,4人当车工,问共

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在11名工中。有5人只能当钳工,4人只能当车工,另外2人能当钳工也能当车工。现从11人中选出4人当钳工,4人当车工,问共有多少种不同的选法?(  )
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完成短文(20)处的填空。

完成短文(20)处的填空。

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为了预防这种疾病,应增加膳食中哪种谷物的比例

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What can be inferred from the passage?

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The word "agoraphobia" underlined in the last paragraph mean

The word "agoraphobia" underlined in the last paragraph means phobia for

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This book is written in such easy English good those with ba

This book is written in such easy English good those with basic command of Engli

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