[",,,,,," ["【每日一题泵设备】判断题",","每题答案全部错误积极参与奖励财富，非答案答案回复不予奖励；"","答案答案一道正确奖励财富；答案全部正确奖励财富；"","回答奖励每人限一次；4每个回复管理评分一次；"","回复答案答案解释；"","回复奖励在4小时内有效。"","离心泵开式和半开式叶轮适用于含固体颗粒、纤维、悬浮物、结晶的液体）；"","一标准平键标记为："","一端半圆弧一端是平端""]

2019-06-26View Original

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bk14.jpg答题及管理规则：1、每题答案全部错误，积极参与奖励2财富，非答案类回复不予奖励；2、答案部分（答对一道）正确奖励5财富；答案全部正确奖励8财富；3、回答奖励每人限一次；4、每个回复限管理评分一次；5、回复后可见答案及解释；6、回复奖励在48小时内有效。学*又拿奖，天天来逛逛 1、离心泵的开式和半开式叶轮适用于含固体颗粒、纤维、悬浮物、易结晶的液体（）； 2、一标准平键标记为：C 10 x 8 x 50，表示该键的两端为半圆弧形状（）。答案：1、正确；2、错误（应为一端半圆弧，一端是平端）

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