A low HDOP (Horizontal Dilution of Precision) number such as 2 indicates a ().
A、poor fix
B、good fix
C、poor signal quality
D、good signal quality
A、poor fix
B、good fix
C、poor signal quality
D、good signal quality
A、Hill of low pressure B、Trough of low pressure C、Valley of low pressure D、Ridge of low pressure
A、Low compression pressure and high exhaust temperature B、Low firing pressure and high exhaust temperature C、Low compression pressure and low exhaust temperature D、Low firing pressure and low exhaust temperature
A、the surface of the sea B、high waters and low waters C、all low waters D、the lower of the two daily low tides