在无线方面以下那个系统消息是主要下发GPRS相关参数的:()
A. System InformationType1
B. System InformationType3
C. System InformationType5
D. System InformationType13
下面哪一种光纤具有模式色散()
A. 多模渐变型光纤
B. 多模阶跃型光纤
C. 单模阶跃型光纤
The change in trim of a vessel may be found by().
A. dividing the trim moments by MT1
B. subtracting the LCF from the LCB
C. looking at the Hydrostatic Properties Table for the draft of the vessel
D. dividing longitudinal moments by the displacement