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题目：
未知类型
A.以教为中心
B.以学为中心
C.以教师为主体
D.以学生为主导
答案：
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Please fill the blanks in the following question of instalment shipments to denote the similarities (3), 4), 7), 8)) and differences (1), 2), 5), 6)) between Example 1 and 2. Instalment shipments in Example 1 1st. 10,000 kgs latest on 30 April, 200× 2nd. 10,000 kgs latest on 31 May, 200× 3rd. 10,000 kgs latest on 30 June, 200× 1)The 2nd and 3rd shipments may be effected by the time of the ______ shipment. 2)The 3rd shipment may be effected by the time of the ______ shipment. 3)If the 1st shipment is not effected by 30 April, the credit would cease to be available for the ______ and the ______ shipments. 4)If the 1st shipment has been effected in time, and the 2nd shipment is not effected by 31 May, the credit would cease to be available for the ______ shipment. Instalment shipment in Example 2 4th, 10,000 kgs between 1 April, 200× to 30 April, 200× 5th, 10,000 kgs between 1 May, 200× to 31 May, 200× 6th, 10,000 kgs between 1 June, 200× to 30 June, 200 × 5)The 5th and 6th shipments may ______ be effected by the time of the 4th shipment. 6)The 6th shipment may ______ be effected by the time of the Sth shipment. 7)If the 4th shipment is not effected by 30 April, the credit would cease to be available for the ______ and the ______ shipments. 8)If the 4th shipment has been effected in time and the 5th shipment is not effected by 31 May, the credit would cease to be available for the ______ shipment.
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对通行费现金管理的基本要求是：（）。
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LOW-E玻璃有哪些特点？
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下述选项中，属高危儿的是
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如果某种水合盐的蒸气压低于相同温度下空气中水蒸气压，这种盐可能发生的情况是（）。
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在幼儿的思维中，有许多想像成分，表现在万物有灵思维、（）、自我中心思维、和视觉外观性思维。
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茶叶的产量是由单位面积内年周期中所采下的（）和（）所组成的。
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造成先天性甲状腺功能低下的最主要的原因是（）
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男性，57岁。大便性状改变伴便血，进行性消瘦1年余。查体：胸膝位指肛检查，距离肛缘4cm扪及占据肠腔一周的包块，质硬，中央凹陷，边缘隆起，尚有一定活动度。终止检查指套带有血迹。首先要考虑的诊断是（）。
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按国家现行卫生标准，商场空调室内人员所需最小新风量，应为（）m3/h（人）。