Due to lapse of time the risk in these areas to surface navigation is now considered ______ than the ordinary risks of navigation，but a very real risk still exists with regard to anchoring，fishing or any form of submarine or seabed activity.A.more seriousB.not less seriousC.more dangerousD.no more dangerous
Due to lapse of time the risk in these areas to surface navigation is now considered ______ than the ordinary risks of navigation，but a very real risk still exists with regard to anchoring，fishing or any form of submarine or seabed activity.
A.more serious
B.not less serious
C.more dangerous
D.no more dangerous
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184 Which of the following activities can be considered as part of risk mitigationA. risk identificationB. purchasing insuranceC. assessment of outcomesD. assessment of probabilitiesE. C and D only
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材料：Coastal conditionsThe area described in the volume presents the mariner with a generally adverse combination of navigational factors which are outline below．Local Topography．The Dover Strait is shallow and only is 18 miles wide at its narrowest point．Passage through the strait is further constricted by a series of narrow banks，running NE-SW．The seabed is also littered with wrecks．Natural Conditions．There are strong tidal streams in the strait．Sea level may differ from that predicted and in particular may be lower than expected due to negative tidal surges．The area is also subject to gales and poor visibility．Risk of Collision．There is a high risk of collision caused by the density of vessel traffic on passage through the strait，including deep-draught vessels，and crossing traffic，including ferries and high speed craft．Mine danger area There are two areas off the N coast of France，which remain dangerous because of mines lied in the war of 1939-1945．Due to the lapse of time the risk to surface navigation is now considered to be no more dangerous than that the ordinary risks of navigation but a very real risk still exists with regard to anchoring，fishing or any form. submarine or seabed activity．问题：The crossing traffic in the Dover Strait is probably running ________．A.NE-SWB.SE-NWC.N-SD.E-WIt is implied in the passage that ________．A.mine is not a danger to surface navigation in Dover StraitB.the width of Dover Strait is not so narrowC.the natural conditions in Dover Strait are too serousD.collision with deep-draught vessels or ferries or high speed craft in Dover Strait is hardly avoidableAccording to the passage，the risk of collision in the Dover Strait is caused by ________．A.gales and poor visibilityB.a series of narrow banksC.the density of vessel traffic on passage through the strait and crossing trafficD.a generally adverse combination of navigational factorsIt is inferred that ________．A.although the tidal streams in Dover Strait is strong，there were few ships sunk in itB.most of the wrecks in Dover Strait were deep-draught vessels，ferries and high speed craftC.the wrecks are not dangers to surface navigationD.there were many ships sunk in Dover Strait请帮忙给出每个问题的正确答案和分析，谢谢！
A frontal thunderstorm is caused by ______.A.pronounced local heatingB.wind being pushed up a mountainC.a warm air mass rising over a cold air massD.an increased lapse rate caused by advection of warm surface air
Some areas, （） their severe weather conditions, are sparsely populated.A、due toB、but forC、in spite ofD、with regard to
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单选题A frontal thunderstorm is caused by（）.Apronounced local heatingBwind being pushed up a mountainCa warm air mass rising over a cold air massDan increased lapse rate caused by advection of warm surface air
单选题Swell is the rise and fall of the ocean’s surface due to（）.AfetchBdistant windsClocal stormsDthe pull of the moon
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单选题Due to lapse of time the risk in these areas to surface navigation is now considered （）than the ordinary risks of navigation，but a very real risk still exists with regard to anchoring，fishing or any form of submarine or seabed activity.Amore seriousBnot less seriousCmore dangerousDno more dangerous
单选题If over a period of time, the oi1 film partially disappears, so that dry areas are formed on the cylinder wall, these areas and the piston surfaces will by frictional interaction, become finely scuffed and hardened, iegood mirror surface" will have deterioratedWhat condition of the piston rings can result in this phenomenon?（）Amicro-seizureBstickingCscratchedDbreakage/collapse
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