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【判断题】
人口老龄化是指60岁以上的老年人口在总人口中的比例超过10%，或65岁以上的老年人口在总人口中的比例超过7%。A.
正确
B.
错误
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【单选题】Everyone has periods in their lives ______ everything seems very hard.
A.
when
B.
where
C.
which
D.
That
【简答题】Everyone has periods in their lives_______everything seems very hard. A．when B．where C．which D．that
【简答题】LTE的协议栈根据用途分为____协议和____协议,其中____协议负责用户数据传输;____协议负责系统信令传输。
【单选题】Everyone has periods in their lives__________everything seems so hard.
A.
when
B.
where
C.
which
D.
that
【单选题】Everyone has periods in their lives ______ everything seems very hard.
A.
when
B.
where
C.
which
D.
that
【单选题】In my opinion, everyone has periods in their lives _______ everything seems very hard.
A.
when
B.
where
C.
which
D.
that
【单选题】根据《建设项目环境保护管理条例》的环境保护制度，下列正确的是( )。
A.
建设项目的初步设计应包含环境保护篇章，落实防治环境污染与生态破坏的措施
B.
配套建设的环境保护设施不能与主体工程同时进行，如此较容易辨识设施问题
C.
为求观测数据客观稳定，建设单位应在项目投入试生产之日起3个月后申请环境保护设施竣工验收
D.
环境保护设备可在验收合格前配合生产需要先行使用
【简答题】Everyone has periods in their lives _______ everything seems so hard.
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