Cast iron and gunmetal fittings are used freely in small sizes at moderate pressure; large fittings, those for high pressure and temperature are cast or mild steelIn the above sentence, the word “those” means ().
相似题目
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Many cast iron pistons are designed with heat dams, which serve to ()
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Any ships fitted with SES can()and()through the satellite system when sending a distress alert.
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An aluminum piston has lower inertia and higher coefficient of () compared to that of cast iron.
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A cast steel strong back is fitted in way of the combustion space to help absorb ().
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A number of cylinder liners are enclosed in one cast iron casing to form a ().
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Cargo vessels being navigated,and fitted with emergency lighting and power systems,shall have their emergency systems tested at least once().
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Every ship must fitted with()SART, and()two-way VHF radio telephone.
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The cast iron()for the cross-head are attached to the top section and seal off the crankcase.
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Cast iron pistons used in large propulsion diesel engines are constructed with ()
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All the following except()are fittings for securing and lashing containers on board ships.
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An advantage of aluminum pistons, when compared to cast iron pistons is ().
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The fitting that allows a boom to move freely both vertically and laterally is called the ().
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Two mooring lines may be placed on the same bollard and either one cast off first if().
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"Cast iron has poor corrosion resistance to sea water, especially in the presence of bronzes" Implies().
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Cast irons weakness in tension and under shock loading limits its use to low pressure steam, air, oil and low speed water fittingsThe above sentence, most probably means ().
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At the top of the A-frames there is a strong cast iron frame called ().
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()directly affect the fitness and ability of a seafarer to perform watchkeeping duties.
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More and more people are aware of the importance of fitness.
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Oolong tea can decompose fat, help lose weight and keep fit.
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The author makes clear both the effects of iron deficiency on people’s health and the
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Some measured all actions by the unalterable rule of right, and the eternal fitness of things.
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()The settlers introduced iron tools, muskets for hunting, domesticated animals, and
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At length as the craft was cast to one side, and ran ranging along with the White Whale's flank, he seemed strangely oblivious of its advance—as the whale sometimes will---and Ahab was fairly within the smoky mountain mist, which, thrown off from the whale's spout, curled round his great Monadnock hump; he was even thus close to him; when, with body arched back, and both arms lengthwise high-lifted to the poise, he darted his fierce iron, and his far fiercer curse into the hated whale.
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The () can determine whether your background and potential seem to fit the position.
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