皮皮学,免费搜题
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【单选题】
麦角新碱可用于治疗产后子宫出血的原因是
A.
扩张血管
B.
使子宫平滑肌强直性收缩
C.
增强前列环素的作用
D.
使子宫平滑肌舒张
E.
促进凝血机制
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【多选题】在热气球飞行样例中,涉及到的运动特效属性有哪些?
A.
位置
B.
缩放
C.
旋转
D.
定位点
E.
透明度
【单选题】My dictionary defines subtle as 'not immediately obvious characterized by skill or ingenuity clever elusive (even) insidious'. Let us look at some concrete instances of this. (The very word itself is ...
A.
One should not omit the letter when spelling the word.
B.
This word is different from other words in pronunciation.
C.
The meaning of the word can be illustrated by the word itself.
D.
The meaning of the word is implied in the word itself.
【多选题】下列哪些属于主动转运的特点
A.
具有特异性
B.
消耗能量
C.
需顺浓度梯度转运
D.
具有饱和性和竞争抑制性
【单选题】在 AgNO 3 饱和溶液中 , 加入 NaCl 固体 , 达平衡时 :
A.
c ( Ag + ) = c (Cl - )
B.
c (Ag + ) = c (Cl - ) = [ K (AgCl) ] 1/2
C.
c ( Ag + ) ¹ c ( Cl - ) , [ c ( Ag + ) / c ]·[ c ( Cl - ) / c ] = K (AgCl )
D.
c ( Ag + ) ¹ c ( Cl - ) , [ c ( Ag + ) / c ]·[ c ( Cl - ) / c ] ¹ K (AgCl )
【简答题】补全对话。 A. Is this his dictionary? B. It's my dictionary. C. And what's this in English? D. How do you spell it? E. No, it isn't. A: Lily, is this your ruler? B: 1 It's his ruler. A: 2 B: It's a diction...
【单选题】My deskmate took my dictionary _______mistake last Sunday. [     ]
A.
by
B.
in
C.
on
D.
with
【多选题】下列属于运动焦虑特点的有哪些()。
A.
赛前焦虑水平会随着对比赛对手的估计及比赛的重要性而升降。
B.
状态焦虑随比赛时间的接近而逐渐上升。
C.
运动员面临的情境压力越高,特质焦虑与状态焦虑的相关就越高。
D.
比赛结果对赛后焦虑水平变化起重要作用。
【单选题】This isn't my dictionary. I left _____ at home. [     ]
A.
my
B.
mine
C.
I
【多选题】下列哪些属于主动转运的特点
A.
需顺浓度梯度转运
B.
消耗能量
C.
具有特异性
D.
具有饱和性和竞争抑制性
【多选题】以下哪些属于太极拳的运动特点或运动特征?
A.
轻灵圆活
B.
具有攻防属性
C.
舒展大方
D.
收胯敛臀
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