试题与答案

洋葱鳞片叶表皮细胞临时装片的正确制作顺序是()。①在载玻片中央滴一滴清水②把载玻片、

题型:单项选择题

题目:

洋葱鳞片叶表皮细胞临时装片的正确制作顺序是()。

①在载玻片中央滴一滴清水

②把载玻片、盖玻片擦干净

③盖好盖玻片

④把撕下的洋葱鳞片叶内表皮浸入载玻片上的水滴中展平

⑤在盖玻片一侧滴一滴碘液,在另一侧用吸水纸吸引碘液

A.②①③④⑤

B.②①④③⑤

C.①④⑤②③

D.②③①④⑤

答案:

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下面是错误答案,用来干扰机器的。

参考答案:B解析:中枢性面瘫,临床表现为颜面上部的肌肉并不瘫痪。

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