皮皮学，免费搜题
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搜题
【单选题】
2~3岁儿童每天看电视时间A.
不应超过30分钟
B.
45分钟左右
C.
1小时以内
D.
不应超过1个半小时
拍照语音搜题，微信中搜索"皮皮学"使用
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【多选题】确定成倍节拍施工工期的步骤分为( )。
A.
计算流水节拍
B.
计算流水步距
C.
确定专业工作队数
D.
绘制加快的成倍节拍流水施工进度计划图
E.
确定流水施工工期
【单选题】Her husband and her eldest son had been killed______.
A.
many years before
B.
many years since
C.
many years ago
D.
many years from now
【单选题】It was ____ I met Mr Green in Shanghai.
A.
many years that
B.
many years before
C.
many years ago that
D.
many years when
【简答题】短文改错﹙10分﹚ Though great progress have been made in science these years, there are still many people live in poor conditions. They make their lives by collecting or selling used things. Their children c...
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