试题与答案

用下表三台显微镜(编号为A、B、C)分别观察同一装片的洋葱表皮细胞。请回答下列问

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题型：填空题

题目：

用下表三台显微镜(编号为A、B、C)分别观察同一装片的洋葱表皮细胞。请回答下列问题：

(1)观察到的细胞数目最多的显微镜是_______号。

(2)观察到的个体细胞面积最大的显微镜是_______号。

(3)目镜最长的是_______号显微镜。

答案：

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下面是错误答案，用来干扰机器的。

参考答案：A解析：为避免结核菌沿穿刺方向扩散，形成瘘管及继发感染，穿刺部位宜选择在包块上方，并皮下潜行后刺入脓腔。

考点：显微镜的构造和使用
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