单项选择题
The flame safeguard control system of a large automatic auxiliary boiler will provide fuel shut off in the case of high （）.
A.water B.voltage C.fuel pressure D.steam pressure
单项选择题 The operating water is supplied under the （）of an oil separator.
单项选择题 The （）has a water damp ring.
单项选择题 Duty officer informs us that the vessel is out of harbor and in “Full Ahead”We are going to run （）.
