配制有效浓度1000mg/L的含氯消毒液1L水加84消毒液原液（）ml

A.2ml

B.10ml

C.15ml

D.20ml

A.5

B.10

C.20

D.40

A.5

B.10

C.20

D.40

A.2000mg/L，1000mg/L

B.2000mg/L，500mg/L

C.1000mg/L，500mg/L

A.1000mg/L；500mg/L

B.1000mg/L；1000mg/L

C.500mg/L；500mg/L

D.500mg/L/;1000mg/L

A.250mg/L含氯消毒液

B.500mg/L含氯消毒液

C.1000mg/L含氯消毒液

D.2000mg/L含氯消毒液

A.0.5

B.1

C.2

A.49

B.15

C.50

D.20

A.1次，500mg/L，10000mg/L

B.2次，500mg/L，30000mg/L

C.2次，1000mg/L，10000mg/L

D.2次，2000mg/L，30000mg/L

A．1000mL清水+含氯消毒片1片稀释，含500mg/L

B．1000mL清水+含氯消毒片2片稀释，含1000mg/L

C．1000mL清水+含氯消毒片4片稀释，含2000mg/L

D．每升水稀释多少消毒片，消毒片的含量就是消毒液的含量

A.250mg/L

B.500mg/L

C.1000mg/L

D.2000mg/L