The diesel engine consumes considerably less fuel than the steam engine for equal output, () enables a motor-ship to load more cargo.
The pump discharge pressure will be considerably higher than the pressure at the ().
Wake varies considerably with the form of the vessel, but, generally speaking, the bluffer the ship () the wake value.
The diesel engine consumes considerably less fuel than the steam engine for equal output, () enables a motor-ship to load more cargo.
Air quality in Britain has improved considerably in the last 30
years. Total emissions of smoke in the air have
risen by over 85 per cent since 1950. The domestic (1)____
smoking control program has been particularly important in (2)____
achieving this result. London and other major cities are no (3)____
longer have the dense smoke-laden “smogs” of the
1950s, and in central London winter sunshine has (4)____
increased about 70 per cent since 1958. (5)____
Since 1990, daily air pollution data from the
British monitoring network has been made available (6)____
to the public by the Department of the Environ-
ment’s Air Quality Bulletins. These give the concen-
trations of three main pollutants-ozone, nitrogen
dioxide and sulfur dioxide –and grade air quality
on a scale between “very weak” and “very (7)____
good”. The information features in television and
radio weather reports, appears in many national and (8)____
local newspapers. Therefore, the data are available (9)____
on a special free telephone number and on videotext systems.
A comprehensive review of the issue of urban
air quality was published in January 1992. Three
independent committees of which experts have been (10)____
established to advise on different aspects of the problem, and
will set guidelines and targets for air quality. The network is
also being extended and upgraded at a cost of £10 million.
The pump discharge pressure will be considerably higher than the pressure at the ().
Wake varies considerably with the form of the vessel, but, generally speaking, the bluffer the ship () the wake value.
The fitting of an efficient radar reflector is likely to considerably increase the ship’s probability of().