Which statement about the gyrocompass is FALSE（）.
A: Its accuracy remains the same at all latitudes
B: It seeks the true meridian
C: It can be used near the Earth's magnetic poles
D: If an error exists，it is the same on all heading
A: Its accuracy remains the same at all latitudes
B: It seeks the true meridian
C: It can be used near the Earth's magnetic poles
D: If an error exists，it is the same on all heading
举一反三
- Which magnetic compass corrector（s）CANNOT be set on a heading of magnetic east or magnetic west（）. A: Heeling magnet B: Flinders bar C: Fore-and-aft magnets D: All of the above can be set on magnetic east or magnetic west heading
- If magnetic compass is not affected by any magnetic field other than the Earth’s, which statement is TRUE ___. A: Compass error and variation are equal B: Compass north will be true north C: Variation will equal deviation D: There will be no compass erro
- All of the following statements are true except one. Which statement is false?
- 12. Which of these is true about the money they make? A: All of it is used to buy coffee. B: All of it is used to buy coffee. C: All of it is used to buy coffee. D: All of it is used to buy coffee.
- Which statement is true regarding synonyms?（） A: Synonyms can be created only for a table B: Synonyms are used to reference only those tables that are owned by another user C: A public synonym and a private synonym can exist with the same name for the same table D: The DROP SYNONYM statement removes the synonym, and the table on which the synonym has been created becomes invalid