根据《SDH本地网光缆传输工程设计规范》,ODF连接器可为FC/PC或SC/PC型,其回波损耗≥40dB、插入损耗≤05dB。
A. 正确
B. 错误
Owing to the greater girth of a ship amidships than at the ends,certain strakes are dropped as they approach the bow and stern to reduce the amount of plating at the ends. These strakes are called().
A. drop strakes
B. stealers
C. throughs
D. void
根据阿特金森成就动机理论,避免失败者的目的是避免失败,减少败感,所以他们倾向于选择非常容易或非常困难的任务。当一项任务的成功率为50%时,他们会()。
A. 可能选择
B. 犹豫不决
C. 坚决选择
D. 回避任务