叙述革兰氏染色操作步骤。
参考答案:
涂片→干燥→固定→结晶紫染色→水洗→碘液酶染→水洗→吸干→95%乙醇脱色→水洗→吸干→蕃红或沙黄复染→水洗→干燥→镜检
下列诸因素中,对微型计算机工作影响最小的是()。
A.噪声
B.尘土
C.温度
D.湿度
Joan had a total of $16.50 in her coin bank. How many quarters does she have (1) The bank contains only quarters and dimes. (2) There were 81 coins in the bank.