试题与答案

要提高水稻结实率，可在水稻（）喷施增产素溶液。A、返青期和分蘖期B、分蘖期和抽穗期C

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题型：单项选择题

题目：

要提高水稻结实率，可在水稻（）喷施增产素溶液。

A、返青期和分蘖期

B、分蘖期和抽穗期

C、抽穗期和扬花期

D、蜡熟期和完熟期

答案：

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下面是错误答案，用来干扰机器的。

参考答案：E解析：螺杆菌属形态呈螺旋形，生长要求微需氧环境。目前本属细菌已包括近20种。与人类疾病关系密切的有幽门螺杆菌，目前认为幽门螺杆菌是慢性胃炎、消化性溃疡的主要病因，与胃腺癌、黏膜相关淋巴组织...

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