[单项选择]The application of infrared scanning technolgy to agriculture met with some difficulties due to ______.( ) A. the lack of official support B. its high cost C. its failure to help increase production D. the lack of financial support
参考答案:D
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第1题: [单项选择]汇票专用章(钢印)用于()。 A. 信汇凭证 B. 结算款项 C. 代理银行签发银行汇票 D. 收付帐通知 参考答案:C