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【判断题】
嫁接育苗的主要作用是避免土壤传染病害。
A.
正确
B.
错误
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【单选题】Tom ________ the radio when I came in.
A.
listened to
B.
was listening to
C.
listened
D.
was listening
【简答题】一个完整的磁盘存储器由三部分组成,其中,______又叫磁盘机或磁盘子系统,是独立于主机的一个完整的设备;______是磁盘机与主机的接口部件;______用于保存信息。
【判断题】一个完整的多媒体系统包括多媒体硬件系统和软件系统。()
A.
正确
B.
错误
【简答题】A.By watching some films about World Environment Day. B.By listening to some lectures and planting trees, etc. C.By planting trees, having some green concerts, bicycle parades, etc. D.By delivering so...
【简答题】A.By watching some films about World Environment Day. B.By listening to some lectures and planting trees, etc. C.By planting trees, having some green concerts, bicycle parades, etc. D.By delivering so...
【简答题】一个完整的计算机系统应当包括______系统和______系统。
【简答题】A.By watching some films about World Environment Day. B.By listening to some lectures and planting trees, etc. C.By planting trees, having some green concerts, bicycle parades, etc. D.By delivering so...
【单选题】备孕妇女膳食指南有( )条关键推荐。
A.
2
B.
3
C.
4
D.
5
【单选题】Li Lei wants to be a singer.He music. [     ]
A.
enjoy listening
B.
enjoys to listen to
C.
enjoys listening to
D.
enjoy listening to
【简答题】压缩式制冷系统是一个完整的密封循环系统,组成这个系统的主要部件包括压缩机、(8)、(9)、和(10)。
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