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【简答题】
中枢神经系统中的神经胶质细胞包括 、 、 和 四种类型。
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皮皮学刷刷变学霸
举一反三
【单选题】E-mail, as well as the telephone, ___________ an important part in daily communication.
A.
is playing
B.
have played
C.
are playing
D.
play
【单选题】以下关于DHCP租约描述不正确的是()
A.
DHCP租约是由主机指定的
B.
DHCP租约是由服务器指定的
C.
当主机上的动态IP地址达到DHCP租约的一半时，会广播request报文进行续约
D.
当主机上的动态IP地址达到DHCP租约的87.5%时，会广播release报文进行续约
【单选题】除另有法定要求外,生产日期不得迟于什么样的操作开始时期,不得以产品包装日期作为生产日期。
A.
灌封前经最后混合。
B.
压片和灌装前经最后混合。
C.
成型和灌装封口，
D.
成型后灌封前经最后混合。
【单选题】With the development of modern society, E-mail as well as telephones _____ an important part in daily communication. [ ]
A.
have played
B.
is playing
C.
are playing
D.
played
【简答题】E-mail, as well as telephones, ______ an important part in daily communication. A) is playing B) have played C) are playing D) play
【单选题】The e-mail, as well as the telephone, ______ an important part in daily communication.
A.
is playing
B.
have played
C.
are playing
D.
play
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