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【单选题】
对类饲料的营养特性描述错误的是( )。A.
、钙缺乏
B.
、蛋白质含量高
C.
、维生素 D 缺乏．
D.
、富含无氮浸出物
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【简答题】what is osmosis?
【单选题】Which of the following is true of osmosis?
A.
Osmosis only takes place in red blood cells
B.
In osmosis, water moves across a membrane from areas of lower solute concentration to areas of higher solute concentration
C.
In osmosis, solutes move across a membrane from areas of lower water concentration to areas of higher water concentration
D.
Osmosis is an energy-demanding or “active” process
【简答题】osmosis
【单选题】Osmosis is
A.
movement of solvent across a semipermeable membrane from an area where the hydrostatic pressure is high to an area where the hydrostatic pressure is low
B.
movement of solute across a semipermeable membrane from an area in which it is in low concentration to an area in which it is in high concentration
C.
movement of a solute across a semipermeable membrane from an area in which it is in high concentration to an area in which it is in low concentration
D.
movement of solvent across a semipermeable membrane from an area in which it is in low concentration to an area in which it is in high concentration
E.
movement of solvent across a semipermeable membrane from an area in which it is in high concentration to an area in which it is in low concentration
【单选题】患者男，72岁，因“无痛性血尿2周”来诊。超声（见下图）：膀胱三角区低回声区，约20mm×25mm，不随体位改变而移位，形态欠规则，低回声区内见点状血流信号，基底附着处膀胱壁肌层显示不清，但外界膜显示尚清晰，膀胱充盈时肿物不向外膨出。 其最可能的超声诊断是（）。
A.
腺性膀胱炎
B.
膀胱血管瘤
C.
膀胱平滑肌瘤
D.
膀胱乳头状瘤
E.
膀胱癌
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