皮皮学，免费搜题
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搜题
【多选题】
以重金属离子为辅助因子的酶，重金属离子的可能作用是( )。A.
作为活性中心的组成成分
B.
将底物与酶螯合起来形成络合物
C.
稳定酶蛋白使其保持催化活性
D.
传递电子
拍照语音搜题，微信中搜索"皮皮学"使用
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皮皮学刷刷变学霸
举一反三
【简答题】Hold on, please. I’ll you right now.
【单选题】Helen hopes to become a friend of ______ purchases her products.
A.
anyone
B.
whomever
C.
whoever
D.
no matter who
【单选题】—Is Peter there? —______, please. I’ll see if I can find him for you. A. Hold up B. Hold on C. Hold out D. Hold off
A.
1
B.
2
C.
3
D.
4
【单选题】Hold the line please. I’ll you to the secretary of the department.
A.
put …through
B.
put …on
C.
put …up
D.
put … off
【单选题】由人际关系的冲突,个体的强烈需求或不切实际的预测、凶事预感、工作压力、心理冲突和认知障碍等引起的应激源是 ( )
A.
躯体性应激源
B.
社会性应激源
C.
文化性应激源
D.
心理性应激源
【单选题】--This is Jackson. Can I speak to Peter? --______, please. I’ll see if I can find him for you.
A.
Hold up
B.
Hold on
C.
Hold out
D.
Hold off
【单选题】Hold on please. I’ll put you_______ to the manager. prefix="o" ns="urn:schemas-microsoft-com:office:office" ?xml:namespace>
A.
across
B.
through
C.
off
D.
over
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