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【多选题】
下面情况有可能的是哪几项？（ ）A.
一物体具有加速度而其速度为零
B.
一物体具有恒定的速率但仍有变化的速度
C.
一物体具有恒定的速度但仍有变化的速率
D.
一物体的加速度大小恒定，而其速度的方向改变
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【简答题】药物作用的二重性
【简答题】The sun had scarcely risen before the fog began to _________. 【disappear; disadvantage; distasteful; distrust】
【单选题】Because I Could Not Stop for Death Because I could not stop for Death— He kindly stopped for me— The carriage held but just Ourselves— And Immortality. We slowly drove—He knew no haste, And I had put ...
A.
views Death as a pleasant companion.
B.
views Death as an intruder
C.
views Death as a figure of authority
D.
views Death as an intimate friend
【单选题】Because I Could Not Stop for Death Because I could not stop for Death— He kindly stopped for me— The carriage held but just Ourselves— And Immortality. We slowly drove—He knew no haste, And I had put ...
A.
a blurring of life and death.
B.
an inability of the dead to focus on the world of the living
C.
a description of the grave
D.
a last image of security one sees before one dies.
【单选题】Because I Could Not Stop for Death Because I could not stop for Death— He kindly stopped for me— The carriage held but just Ourselves— And Immortality. We slowly drove—He knew no haste, And I had put ...
A.
an indifferent driver.
B.
the problems man encounters.
C.
an immortal god disguised as a human.
D.
none of the above
【单选题】下列说法中，正确的是()。①客户在进行委托前须确保已完全了解有关交易规则，避免发出无效指令②客户发出的指令被证券公司委托系统或证券交易所交易系统拒绝受理，则该委托应视为无效委托③证券公司接受客户委托指令是，如果出现由于客户原委托指令未撤销而造成证券公司无法执行客户新的委托指令时，由此导致的后果、风险和损失，由客户承担④客户在委托有效期内对未显示成交回报的委托发出撤销委托指令，但由于市场价格随时波动...
A.
①②③
B.
①②④
C.
③④
D.
①②③④
【多选题】招标人在服务投标函中设有投标人声明的相关内容，其中对要求投标人在投标函中对其权利、义务进行声明的内容描述不正确的有( )。
A.
投标人不承担因对招标文件不理解或误解而产生的后果
B.
投标人承认并同意招标人保留“接受或拒绝任何投标”的权利
C.
投标人保证遵守招标文件的全部规定，确认其提交的材料所陈述内容和声明均是真实和正确的
D.
确认招标人无权根据招标文件的规定，在投标人未能履行规定责任时没收其投标保证金
E.
保证投标文件的所有内容均属独立完成，未经与其他投标人以限制本项目的竞争为目的协商、合作或达成谅解后完成
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