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【单选题】
酵母菌培养液中常含有一定浓度的葡萄糖,但当葡萄糖浓度过,反而会抑制微生物的生长,原因是A.
碳源供应太充足
B.
细胞会发生质壁分离
C.
改变了酵母菌的pH值
D.
葡萄糖不是酵母菌的原料
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知识点：
皮皮学刷刷变学霸
举一反三
【简答题】指示剂的选择原则是( ) A 、指示剂的变色范围必须与滴定的突跃范围重合; B 、指示剂的变色范围与滴定的突跃范围没有关系; C 、指示剂的变色范围必须包含在滴定的突跃范围内; D 、指示剂的变色范围应处于或部分处于滴定的突跃范围内。
【简答题】一住店客人未付房钱即离开旅馆去车站，旅店服务员见状揪住他不让走，并打报警电话。客人说：“你不让我走还限制我自由，我要告你们旅馆，耽误了乘火车要你们赔偿。”旅馆这样做的性质应如何认定（ ）
【简答题】指示剂的变色范围应是______
【单选题】What’s the meaning of “exonerating circumstances”? _____________.
A.
Negotiators suggest that they had no choice in taking the positions they did.
B.
Negotiators who use multiple explanations are more likely to have better outcomes.
C.
Outcomes can be explained by changing the context.
D.
Negotiators explain their positions from a broader perspective, suggesting that while their current position may appear negative it derives from positive motives.
【单选题】Define exonerating circumstances.
A.
Negotiators suggest that they had no choice in taking the positions they did.
B.
Negotiators explain their positions from a broader perspective, suggesting that while their current position may appear negative it derives from positive motives.
C.
Outcomes can be explained by changing the context.
D.
Negotiators who use multiple explanations are more likely to have better outcomes.
E.
None of the above can define exonerating circumstances.
【单选题】If the guest is asleep or in the bathroom, what should the room attendant do next?
A.
Continue tidying up the room.
B.
Leave quietly and close the door.
C.
Knock at the door for another 3 times.
D.
Clean laundry in appropriate way.
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