[简答题]Relativity theory has had a profound influence on our picture of matter by forcing us to modify our concept of a particle in an essential way. (46) In classical physics, the mass of an object had always been associated with an indestructible material substance, with some "stuff" of which all things were thought to be made. Relativity theory showed that mass has nothing to do with any substance, but is a form energy. Energy, however, is a dynamic quantity associated with activity, or with processes. (47) The fact that the mass of a particle is equivalent to a certain of energy means that the particle can no longer be seen as a static _object, but has to be conceived as a dynamic pattern, a process involving the energy which manifest itself as the particle’s mass.
(48) This new view of particles was initiated by Dirac when he formulated a relativistic equation describing the behavior of electrons. Dirac’s theory was not only extremely

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[判断题]所有的药品都应有标签。

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[判断题]经济全球化只有正面效应。
A.正确
B.错误

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[单选题]接地线的截面应（）。
A. 符合短路电流的要求并不得小于25mm2
B. 符合短路电流的要求并不得小于35 mm2
C. 不得小于25 mm2
D. 不得大于50 mm2

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[判断题]各单位工资分配要加强内部分配管理，制定本单位工资分配办法，理顺单位之间、岗位与岗位之间、同岗位之间的分配关系
A.正确
B.错误

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[简答题]专责监护人应具备哪些基本条件?

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[单选题]依据南网安规，李X使用携带型仪器进行电气测量作业，作业要求连接电流回路的导线截面，应适合所测电流数值。那么使用的连接电压回路的导线截面不应小于（）。
A.0.8mm2
B.1.0mm2
C.1.2mm2
D.1.5mm2

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[判断题]3C认证的是18类123种商品。( )

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[报关编码]其他木炭

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[单选题]卸载或禁用计算机防病毒、桌面管理等安全防护软件，拆卸、更换终端设备软件，应经信息运维单位（部门）批准。
A.A:对。
B.
C.略
D.略
E.略
F.略

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[单项选择]

Text 4
Bernard Bailyn has recently reinterpreted the early history of the United States by applying new social research findings on the experiences of European migrants. In his reinterpretation, migration becomes the organizing principle for rewriting the history of pre- industrial North America. His approach rests on four separate propositions.
The first of these asserts that residents of early modern England moved regularly about their countryside: migrating to the New World was simply a "natural spillover’. Although at first the colonies held little positive attraction for the English—they would rather have stayed home—by the eighteenth century people increasingly migrated to America because they regarded it as the land of opportunity. Secondly, Bailyn holds that, contrary to the notion that used to flourish in American history textbooks, there was never a typical New World community. For example, the economic and demographic chara
A. Bailyn underestimates the effect of Puritan thought on North American culture.
B. Bailyn overemphasizes the economic dependence of the colonies on Great Britain.
C. Bailyn's description of colonies as part of an Anglo-American empire is misleading.
D. Bailyn failed to test his proposition on a specific group of migrants to colonial North America.

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[简答题]简述电能表轻载误差产生的原因？

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[填空题]道岔计划维修作业验收检查评分标准规定,轨顶面或内侧面错牙大于1mm,每处扣( )分。

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[单项选择]种皮栅状细胞为1列，支持细胞哑铃形的中药材是
A. 苦杏仁
B. 小茴香
C. 巴豆
D. 补骨脂
E. 五味子

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[单选题]路由器、交换机等网络设备主控板倒换功能检测维护周期为（），由网管和现场配合执行。
A.月
B.季
C.半年
D.年

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[单选题]1施工现场用电工程中，PE线上每处重复接地的接地电阻值不应大于( )。
A.4Ω
B.10Ω
C.30Ω
D.100Ω

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