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【单选题】
将铁片和铜片同时放入硝酸银溶液中，充分反应后过滤，在滤纸上留下少量金属a，并得到滤液b。下列关于a或b的组成说法错误的是 [ ]A.
若向a中滴加稀盐酸有气泡生成，则a中一定含有Ag
B.
若向a中滴加稀盐酸无气泡生成，则b中可能含有Cu 2+
C.
若向b中滴加稀盐酸产生白色沉淀，则b中可能含有Fe 2+
D.
若向b中滴加稀盐酸无明显变化，则a中一定含有Ag，可能含有Cu
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【多选题】与collect laundry 同义表达的短语
A.
deliver laundry
B.
pick up laundry
C.
take laundry
D.
bring laundry
【单选题】Laundry is, after all, just laundry. Except when it's not. And Procter & Gamble Co. recently realized that Tide, its segment-dominating cash cow, despite adding three share points in the past year for...
A.
is no longer a dominating cash cow of P&G
B.
has seen the end of brand growth
C.
was in danger of becoming an ordinary commodity
D.
lost its appeal to consumers buy on price and habit
【简答题】利用定时器T0工作方式1,完成8路流水等程序设计,流水灯间隔时间为0.5s。 #include // 预处理命令 void main() { unsigned int i,j,value,dec; ;//设置工作方式 TH0=0X3C; TL0=0XB0; ;//启动T0 do{ value=254; dec=1; for(i=0;i<8;i++){ P1=value;// 点亮 LED for(...
【简答题】PASSAGE FOUR What is the factor that results in the primitive crafts, according to the author?
【单选题】支气管扩张症最典型的临床表现是
A.
慢性咳嗽，大量浓痰，喘息
B.
胸痛，慢性咳嗽，咯血
C.
呼吸困难，反复咯血，喘息
D.
慢性咳嗽，反复咯血，大量脓痰
E.
慢性咳嗽，大量脓痰，寒战高热
【简答题】PASSAGE FOUR What is the role the 6th paragraph in the development of the topic?
【单选题】支气管扩张患者最典型的临床表现为
A.
慢性咳嗽、大量脓痰、伴有喘息
B.
慢性咳嗽、大量脓痰、长期胸痛
C.
慢性咳嗽、大量脓痰、伴寒战高热
D.
慢性咳嗽、大量脓痰、反复咯血
E.
慢性咳嗽、大量脓痰、呼吸困难
相关题目：
【多选题】与collect laundry 同义表达的短语
A.
deliver laundry
B.
pick up laundry
C.
take laundry
D.
bring laundry