皮皮学，免费搜题
登录
搜题
【单选题】
在 1 mol/L H2SO4 溶液中,以 0.05 mol/L Ce4+ 溶液滴定 0.05 mol/L Fe2+ 溶液,化学计量点时电势为 1.06 V(滴定突跃的电势范围为 0.86~1.26 V),则应选择的指示剂是A.
二苯胺磺酸钠（ E q ' = 0.84 V ）
B.
硝基邻二氮菲-亚铁（ E q ' = 1.25 V ）
C.
邻苯氨基苯甲酸（ E q ' = 0.89 V ）
D.
邻二氮菲-亚铁（ E q ' = 1.06 V ）
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】One turns on the radio while doing something else and ____________ bathes in the sound.
A.
engendered
B.
absentmindedly
C.
appealing
D.
mere
【单选题】Why did Jane visited Helen Burns at night?
A.
Because she was lonely.
B.
Because she wanted to share food with Helen.
C.
Because she wanted to ask Helen to play with her.
D.
Because Helen was dying and that might be the last time she saw Helen.
【单选题】Why did Helen get the modeling job?
A.
She had modeling experience.
B.
She had practiced a lot.
C.
She paid high fees.
D.
She complained to the right person.
【单选题】According to Helen Smith, why did the men kill others before they commit suicide?
A.
They want to take revenge on the society.
B.
They want to vent their anger on others before they die.
C.
They want companionship instead of loneliness when they die.
D.
They want to satisfy their sexual desire before their death.
【单选题】It is mentioned that the theatre is equipped with the following EXCEPT ______.
A.
Modem sound effect devices
B.
Fire protection devices
C.
Art classics of the state
D.
A reservoir
【单选题】慢性阻塞性肺病疾病急性发作期患者,长期卧床,咳痰无力,为促进排痰,护士给予胸部叩击,叩击,叩击方法中,错误的是 A.患者取侧卧位 B.叩击顺序由外向内 C.叩击顺序由下向上 D.叩击者的手扇形张开 E.叩击者手指向掌心微屈
A.
B.
C.
D.
E.
E
【单选题】旅游团在上一站的有些要求没有被满足,全陪应主动将这一情况告知下一站的地陪,反过来,当旅游者发生走失事故时,地陪应主动争取全陪配合,先请全陪代为寻找,这体现了导游服务集体之间( )。
A.
彼此尊重，相互学习
B.
互相补台，勇担责任
C.
互通信息，争取对方配合
D.
坚持原则，平等协商
【单选题】What may be the best title for the text? 查看材料
A.
Sound and Silence
B.
What It Means to Be Silent
C.
Silence to Native Americans
D.
Speech Is Silver; Silence Is Gold
相关题目：