红外激光胶片的吸收光谱峰值是()
A.633nm
B.550nm
C.420nm
D.820nm
E.380nm
参考答案:D
The money he spent within a month _________ more than 1,000 dollars.
A.added
B.added to
C.added up to
D.was added up
中国光大银行“保兑仓”业务是指以光大银行信用为载体,以()为结算工具。
A、商业承兑汇票
B、银行本票
C、银行承兑汇票
D、银行汇票