金属粉末,按重量计算含银96.5%、金2.0%、铂1%、钯0.5%
参考答案:18(7108.1100)
登录个人网上银行时,输入用户号及登录密码后,系统提示“客户号有误”,怎么办?
—Do you like math?
—Yes, it’s difficult ________ really interesting.
A.but
B.and
C.or
D.so