【简答题】为什么单片机外扩存储器时,P0口要外接锁存器,而P2口却不接?
【简答题】为什么外扩存储器时,P0口要外接锁存器,而P2口却不接?
【简答题】为什么外扩存储器时,P0口要外接锁存器,而P2口却不接?
【简答题】为什么外扩存储器时,P0口要外接锁存器,而P2口却不接?
【单选题】信用证中采用下列_ _交货术语表示装运时间,根据くUCP600〉规定,银行将不子置理
A.
shipment during March 2014
B.
shipment as soon as possible
C.
shipment within 35 days, after receipt of L/C
D.
Shipment not later than the end of June 2014
【单选题】( )调车信号机按钮可兼做列车进路的变通按钮。
【单选题】信用证中采用( )表示装运时间,《 UCP600 》规定,银行将不予理置。
B.
shipment as soon as possible
C.
shipment within 30 days after receipt of L/C
D.
shipment not later than 31 January