A .18.5%~21.5%
B .20.5%~24.5%
C .22.5%~24.5%
D .23.5%~26.5%
[单选题]SBR-1500优级品结合苯乙烯指标是()。A .18.5%~21.5%B .20.5%~24.5%C .22.5%~24.5%D .23.5%~26.5%
[单选题]SBR-1502优级品结合苯乙烯指标是()。A .18.5%~21.5%B .20.5%~24.5%C .22.5%~24.5%D .23.5%~26.5%
[单选题]SBR-1778优级品结合苯乙烯指标是()。A .23.5%~26.5%B .22.5%~24.5%C .20.5%~24.5%D .18.5%~21.5%
[单选题]SBR-1712优级品有机酸指标是()。A .3.90%~5.70%B .4.25%~6.00%C .5.00%~6.25%D .6.00%~8.25%
[单选题]SBR-1712优级品挥发份指标是≤()。A .0.75%B .0.80%C .0.90%D .1.00%
[单选题]SBR-1712优级品生胶门尼粘度指标是()。A .50~68B .46~56C .40~65D .40~58
[单选题]SBR-1712优级品混炼胶门尼粘度指标是≤()。A .50B .70C .95D .105
[单选题]SBR-1712优级品25′300%定伸强度指标是()。A .5.0~8.0MPaB .7.1~11.6MPaC .8.1~13.6MPaD .9.1~13.6MPa
[单选题]SBR-1500优级品有机酸指标是()。A .4.25%~6.00%B .5.00%~6.25%C .5.00%~7.25%D .6.00%~8.25%
[单选题]SBR-1500优级品挥发份指标是≤()。A .0.75%B .0.80%C .0.90%D .1.00%