能用口头表达和解释的,就不要用文字来书写。这充分说明,进行报价解释时必须()。
A.不问不答
B.有问必答
C.避虚就实
D.能言不书
参考答案:D
(74) is NOT served by building a prototype.
A.It takes the place of the final system
B.It is used as the foundation of the larger projects
C.It assists in estimating the cost of the project
D.It assists in gathering software requirements
下列呼吸困难类型中,最可能是由左心功能衰竭所致的是()
A.劳力性呼吸困难
B.吸气性呼吸困难
C.呼气性呼吸困难
D.夜间阵发性呼吸困难
E.阻塞性呼吸困难