第8题: [单项选择]釉质的无机盐主要存在形式是 A. Ca(OH)2 B. NaCl C. Ca10(PO4)6(OH)2 D. Mg3(PO4)2 E. Na2CO3 参考答案:C 答案解析:[解析] 釉质的无机成分主要是钙和磷,其次是碳酸盐、钠、镁、氯及氟等。考生要记住其无机盐主要存在形式是钙、磷以羟基磷灰石结晶[Ca10(PO4)6
第20题: [单项选择]{{B}}Questions 11 to 18 are based on the conversation you have just heard.{{/B}} A. Away from home. B. In the army. C. At a distant college. D. At home. 参考答案:C 答案解析:[听力原文]
W: My son finds it very difficult to be away from home.
M: I had a similar problem with my
第32题: [单项选择]某汽车厂准备从某大型设备经销公司购入一项生产设备,签订合同,设备价值为3000万元。由于流动奖金紧张,为此与工商银行签订了2000万元的借款合同。根据上述情况,汽车厂一共应纳印花税( )元。 A. 10200 B. 12000 C. 7000 D. 10000 参考答案:D 答案解析:[解析] 应纳税额=3000×0.3‰+2000×0.05‰=1(万元)=10000(元)