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【单选题】
mysqli_num_rows 函数作用是:A.
获得结果集中的字段数
B.
获得结果集中的行数
C.
获得结果集
D.
获得结果集中的字段
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举一反三
【单选题】对NPN型晶体管,如果在集电极和发射极施加电压,其中集电极为正电压,那么发射极内的自由电子( )。
A.
朝基极侧移动
B.
朝集电极侧移动
C.
不动
D.
在发射极处无序运动
【单选题】A: Take a seat， Mr. Carl. Could you tell me which position you think most appeals to you? B: __________
A.
Well， I am easy-going and have many interests.
B.
I'm strong willed and determined.
C.
I prefer to take the post of sales manager if you think I am qualified.
D.
I don' t quite care whichever is offered to me.
【单选题】听力原文：W: Could you tell me something about the apartment you're renting? M: Well, it's two hundred eighty five dollars a month including heat. Q: What does the woman want to do? (14)
A.
Borrow some money.
B.
Buy a heater.
C.
Get some information.
D.
Pay the rent.
【单选题】Could you tell me _____, Linda? [ ]
A.
what's the matter with you
B.
what was wrong with you
C.
when the accident was happened
D.
when did the accident happen
【简答题】When swimmers travel in Honolulu, where is the best choice for them?
【单选题】患者女性，43岁风湿性心脏病伴心功能不全，双下肢及身体下垂部位严重水肿，该患者每日饮食中应控制
A.
摄入盐量不超过5g
B.
摄入盐量不超过2g
C.
摄入盐量不超过0.5g
D.
摄入钠量不超过2g
E.
摄入钠量不超过0.5g
【单选题】对NPN型晶体管，如果在集电极和发射极施加电压，其中集电极为正电压，那么发射极内的自由电子（）。
A.
朝基极侧移动
B.
朝集电极侧移动
C.
不动
D.
在发射极处无序运动
【单选题】对NPN型晶体管,如果在集电极和发射极施加电压,其中集电极为正电压,那么发射极内的自由电子( )。
A.
集电极电流疏通
B.
基极电流疏通
C.
不动
D.
在基极处无序运动
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