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【单选题】
以下不属于主观幸福感的指标的是()。A.
积极情感
B.
身体健康状况
C.
消极情感
D.
生活满意度
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知识点：
皮皮学刷刷变学霸
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【单选题】如图 所示 , 质量为 m 的物体用平行于斜面的细线联结置于光滑的斜面上,若斜面向左方作加速运动,当物体刚脱离斜面时,它的加速度的大小为
A.
gsin
B.
gcos
C.
gtan
D.
gcot
【简答题】In those days even bicycles were very dear and hard to ______, and coupons were issued for them.
【简答题】And even graves themselves soon ______back into the soil.
【单选题】Some people say that if the holder of chopsticks pushes them______ his stomach to even them up instead of tapping them on the table, the chances are he is a coolie.
A.
on
B.
against
C.
at
D.
to
【单选题】Much to her delight, three _________ neighbors showed up and several of them even brought with them some candies and cookies.
A.
dozens
B.
dozen
C.
dozen of
D.
dozens of
【单选题】如图所示,质量为m的物体用平行于斜面的细线连接置于光滑的斜面上,若斜面向右方作加速运动,当物体刚脱离斜面时,它的加速度的大小为( )
A.
;
B.
;
C.
;
D.
。
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