单位协定存款是指存款单位与农业银行协议约定,在单位银行结算账户之上,开立协定存款账户。
参考答案:对
To survive in the intense trade competition between countries, we must ______ the qualities and varieties of products we make to the world market demand.
A.improve
B.enhance
C.guarantee
D.gear
当与回路所交链的磁通发生变化时,回路中感应电动势的方向是由()判定的。
A.左手定则
B.右手定则
C.欧姆定律
D.楞次定律