此题为判断题(对,错)。
第1题:
Given the following DDL for the PARTS table:CREATE TABLE parts (part_no INT(9) NOT NULL, part_name VARCHAR(24), part_remain INT(9));All part numbers entered will be different and all rows should be displayed in order of increasing part numbers whenever the table is queried. Which of the following create index statements will meet this criteria and require the least amount of storage for the index object?()
A.CREATE UNIQUE INDEX idx_partno ON parts(part_no)
B.CREATE UNIQUE INDEX idx_partno ON parts(part_name ASC)
C.CREATE UNIQUE INDEX idx_partno ON parts(part_name, part_no ASC)
D.CREATE UNIQUE INDEX idx_partno ON parts(part_no, part_name ASC)
第2题:
A.为了运行Urban模型的Half Screen部分,必须使用高分辨率的建筑物数据库
B.9999模型通常用来对宏蜂窝小区进行计算
C.通过将测量数据导入TEMS cellplanner universal,可以对9999模型进行自动调整
D.Urban模型由Half Screen部分和Recursive部分组成
E.在9999模型中考虑了Tx和Rx间障碍物的影响
第3题:
out of 13)__________ people.
第4题:
8.—Can we _______ ping-pong?
—No,_______ tennis.
A. play; let's play
B. plays; let's play
C. play; let's to play
D. plays; let's to play
第5题:
第6题:
在Creo 中,需选用实体零件公制模板是()。
A.mmns_part_solid
B.mmns_harn_part
C.solid_part_mmks
D.inlbs_part_solid