stamp collectors 可不可数数

stamp collectors 可不可数数 Any mistake made in the printing of a stamp raises its value to stamp collectors.Please tell me the chinese means.Thank you! There are () stamp-collectors in our class A the number of B a number OF c NUMBERS D NUMBER OF stamp 通货膨胀可不可预期? mistake可不可属 氢氧化钡可不可容 可不可把 雕虫小技 The set of stamps,once _______,will be very popular with stamp-collectors.A.to be printingB.to printC.printingD.printed我想知道具体原因,以及B为什么不正确. current collectors是什么意思 次氯酸{Hclo}可不可拆 酒精可不可酒喝 可有不可无是什么意思? 染色体变异可不可遗传 主诸事皆,可不可激进是什么意思 back-stamp stamp是什么意思 geogro stamp