多项选择题

下列哪些是影响砌体抗压强度的因素？( )
A、块体和砂浆强度
B、块体的表面平整度和几何尺寸
C、砌筑质量和水平灰缝厚度
D、砖砌筑时含水率

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单项选择题

During the year ended 30 September 20X4 Hyper Co entered into two lease transactions: On 1 October 20X3 a payment of 340,000. On 1 August 20X4 a payment of $18,000 for a nine-month lease of an item of excavation equipment. What amount in total would be charged to Hyper Co's statement of profit or loss for the year ended 30 September 20X4 in respect of the above transactions?

A．$98,000
B．$68,000
C．$97,000
D．$101,000

单项选择题

‏五峰组和龙马溪组中最重要的断代性生物带是什么？‌

A．腕足类生物带
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C．笔石生物带
D．放射虫生物带