The radar control used to reduce sea return at close ranges is the().
- Again control
- Bsensitivity time control
- Cfast time constant
- Dpulse length control
The radar control used to reduce sea return at close ranges is the().
1、The series of valves used to control t
The series of valves used to control the return flow in well control operations is called the().Avalve assemblyBstandpipe manifoldCaccumulator manifoldDchoke manifold
2、The radar control that shortens all ec
The radar control that shortens all echoes on the display and reduces clutter caused by rain or snow is the().Asensitivity time control (sea clutter control)Breceiver gain controlCbrilliance controlDfast time constant (differentiator)
3、At sea, we can use()to fix the ship’s
At sea, we can use()to fix the ship’s position.Asteering gearBLoranCrudder indicatorDlog
4、()is used to prevent the entry of sea
()is used to prevent the entry of sea water to the machinery space.AA special sealing glandBPropellerCTailshaftDSterntube bearing
5、Radar is used to not only to look(),bu
Radar is used to not only to look(),but also to measure their distances away from you.Aat obscured objectsBforward submerged targetsCup exposed targetsDfor unseen object
6、You are using the control file to main
You are using the control file to maintain information about the database backups that are being performed by Recovery Manager (RMAN). Identify...