按英美法系国家的规定:若合同中没有明确规定履行日期,债权人原则上要向债务人发出催告,才能使债务人承担延迟履约的责任。()
参考答案:错
The "main storage" normally means that part of internal storage into which instructions and other data must be loaded for subsequent execution or processing. In large computing systems, the term "main storage" is (71) to "memory". "Buffer" mainly indicates a special-purpose storage or storage area allowing, through (72) storage, the data transfer between two functional units having different transfer characteristics. A buffer storage is used between non-synchronized devices or where one is (73) and the other is parallel or between those having different trans far rates. " (74) (memory)" is also a special-purpose buffer storage, smaller and faster than main storage, used to hold a copy of instructions and data obtained from main storage and likely to be needed next by the processor. "Register" is commonly composed of a part of internal storage having a specified storage (75) and usually intended for a specific purpose.
(72)是()
A.instant
B.temporary
C.timely
D.transient
乳牙牙根开始吸收在换牙前
A.6~8个月
B.9~10个月
C.1~1.5年
D.2~3年
E.4~5年