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在团队中,一个团队成员只能扮演一个角色,但多种成员能扮演同一角色。()

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焊工手套不得短于200mm。()

According to Paragraph 1, which of the following is true of La Nina?

A. It brings an end to El Nino.
B. It balances the effects of El Nino.
C. It follows a decrease of ocean temperature.
D. It causes the ocean temperature to drop rapidly.

To which of the following statements would Steven Pinker most probably agree?

A. Music serves no facility for the formation of people"s habits.
B. Music and exquisite dessert share great similarities.
C. The absence of music brings little effect to human life.
D. Music helps to erase the brutal characteristics in human.

二氧化碳气体保护焊焊机一般采用直流正接。()

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