题目内容

一旦企业与银行签订周转信贷协议,则在协议的有效期内,只要企业的借款总额不超过最高限额,银行必须满足企业任何时候任何用途的借款要求。 ( )

A. 对
B. 错

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Americans usually eat three meals a day. Breakfast usually comes before eight o’clock in the morning. They usually have eggs, some meat, bread, fruit juice and coffee. Lunch, is between twelve and one o’clock. It is a light meal and working people most take lunch with them or get it near their workplace. Children in school take sandwiches, fruit, and cookies with them or eat in school. Supper, the main meal, is between six and eight in the evening. People cook it carefully. They may have meat or chicken, turkey or duck. They may all have potatoes or rice, vegetables or salad. The drink is coffee, tea or milk. Then comes the dessert. ______ is the most important meal in a day.

A. Breakfast
B. Supper
C. Lunch

以M表示金属离子,Y表示EDTA,MY表示它们的络合物,则MY的稳定常数K的表达式为K=[MY][Y]/[MY]。

A. 对
B. 错

用基准物标定标准溶液时,先准确称取一定量的基准物,溶于水后再用标准溶液滴定至反应完全。

A. 对
B. 错

如果待测样品的浓度超出标准曲线的浓度范围,就不能用分光光度法测定。

A. 对
B. 错

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