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【多选题】
影响酶促反应速度的因素有A.
温度
B.
底物浓度
C.
激活剂
D.
酶原浓度
E.
pH
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举一反三
【单选题】---- Does your wife like tea? ---- Well, she doesn’t really ____ tea; she likes coffee better.
A.
care for
B.
care
C.
care about
D.
care of
【简答题】A．She doesn't like tea although it's good for her health. B．She likes to drink tea for its good taste. C．She likes beef for its rich nutrition. D．She doesn't like beef at all for its taste.
【简答题】青岛海鲜很有名，下列哪组海鲜都属于软体动物? A、章鱼、蛤蜊 B、鲳鱼、牡蛎 C、鲍鱼、海蛇
【单选题】一平面简谐波,沿 x 轴负方向传播 。 角频率为 w ,波速为 u 。 设 t = T /4 时刻的波形如图所示,则该波的表达式为
A.
y=Acos[ w (t-x/u)]
B.
y=Acos[ w (t-x/u)+π/2]
C.
y=Acos[ w (t+x/u)]
D.
y=Acos[ w (t+x/u)+π]
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