A、bottom blow the boiler
B、treat the water with caustic soda
C、treat the water with chemical scavengers
D、reduce the water alkalinity to recommended readings
更多“If an operating auxiliary boiler has a water pH reading of 7, you should （）.”相关的问题
A、If the file exists it will be opened for editing. If the file does not exist an error message will be displayed. B、If the file exists it will be opened for editing. If the file does not exist a new file with the name file.out will be created and opened for editing. C、If the file exists an error message will be displayed. If the file does not exist a new file with the name file.out will be created and opened for editing. D、If the file exists the operator will be asked whether to open the file or overwrite the file. If the file does not exist a new file with the name file.out will be created and opened for editing.
A、A DHCP client uses a ping to detect address conflicts. B、A DHCP server uses a gratuitous ARP to detect DHCP clients. C、A DHCP client uses a gratuitous ARP to detect a DHCP server. D、If an address conflict is detected, the address is removed from the pool and an administrator must resolve the conflict. E、If an address conflict is detected, the address removed from the pool for an amount of time configurable by the administrator. F、If an address conflict is detected, the address is removed from the pool and will not be reused until server is rebooted.
A、A DHCP client uses a ping to detect address conflicts.(ARP) B、A DHCP server uses a gratuitous ARP to detect DHCP clients. C、A DHCP client uses a gratuitous ARP to detect a DHCP server. D、If an address conflict is detected, the address is removed from the pool and an administrator must resolve the conflict. E、If an address conflict is detected, the address removed from the pool for an amount of time configurable by the administrator. F、If an address conflict is detected, the address is removed from the pool and will not be reused until server is rebooted.
A、in sight of one another in fog B、navigating in or near an area of restricted visibility C、only if they are showing special purpose lights D、only if they have operational radar
A、operated continuously while vapors may be present B、operated intermittently to remove vapors C、available on standby for immediate use D、shut down if an explosive mixture is present
A、further damaging the other vessel B、undue delay C、serious danger to his or her own vessel D、creating a panic on either vessel
A、an overfilled expansion tank B、excess chromate treatment of the jacket water C、a clogged raw water sea suction D、cavitation erosion of the heat exchanger tubes
A、a broken shaft on the freshwater pump B、an excessive accumulation of scale exchanger C、an incorrect thermostatic element operating range D、lube oil in the cooling water
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