The tendency of a flammable liquid to vaporize is indicated by its （）.

A . ignite B . explode C . asphyxiate D . vaporize

A . Stability B . Responsibility C . Liability D . Visibility

A . Right B . Wrong C . Not mentioned

A . the vapor air mixture is too rich to burn B . an explosion may occur if a source of ignition is present C . the vapor air mixture is too lean to bum the upper explosive D . limit has been exceeded

A . lighter than air B . heavier than air C . odorless D . nontoxic

A . minimum oxygen content line B . critical displacement line C . critical dilution line D . upper threshold limit

A . Flash point improvers B . Pour point improvers C . Inhibitors D . Foam suppressor

A . Make periodic inspections of bilges B . Keep the barge under constant surveillance C . Have a properly certificated tankerman or at least one licensed officer on board the towing vessel D . Verify ullage reading

A . increase B . decrease C . change only if the vessel comes about on the opposite tack D . not change

A . angle that the propeller makes with a free stream of water B . angle that the propeller makes with the surface of the water C . number of feet per revolution the propeller is designed to advance in still water without slip D . positive pressure resulting from the difference of the forces on both sides of the moving propeller in still water without sli

A . the CO being inhaled by personnel B . reflash of burning liquids C . vapor condensation on the extinguisher D . the discharge causing a static spark

A . cooling the gas below the ignition point B . cutting off the supply of oxygen C . stopping the flow of gas D . interrupting the chain reactio

A . used only under the supervision and direction of a ship's officer B . tightly capped and stowed with other tools near the job site when securing at the end of the day C . used only when a pressurized fire hose is laid out ready for immediate use D . in a metal container with a tight ca

A . low viscosity index B . high viscosity index C . high neutralization number D . low demulsibility quality

A . flammable vapor by volume in air B . oxygen present to support combustion C . the temperature of the flash point D . the lower limit of explosibility of the mixture

A . excessively high oil temperatures B . water or moisture contamination C . fuel dilution D . life its cylinder relief vale

A . Inclining moment B . Stability C . Shearing force D . Bending moment

Social support cushions stress in a number of ways. First, friends, relatives, and co-workers may let us know that they value us. Our self-respect is strengthened when we feel accepted by others despite our faults and difficulties. Second, other people often provide us with informational support. They help us to define and understand our problems and find solutions to them. Third, we typically find social companionship supportive. Engaging in leisure-time activities with others helps us to meet our social needs while at the same time distracting (转移…注意力) us from our worries and troubles. Finally, other people may give us instrumental support—financial aid, material resources, and needed services—that reduces stress by helping us resolve and cope with our problems. 第66题：Interpersonal relationships are important because ________. A) they are indispensable to people’s social well-being B) they awaken people’s desire to exchange resources C) they help people to cope with life in the information era D) they can cure a range of illnesses such as heart disease, etc

That is because the tidiness lobby counts the benefits of neatness, but not its costs. A rough storage system (important papers close to the keyboard, the rest distributed in loosely related piles on every flat surface) takes very little time to manage. Filing every bit of paper in a precise category, with colour-coded index tabs and a neat system of cross-referencing, will certainly take longer. And by the end, it may not save any time. Your reviewer's office is easily the most untidy in The Economist (not entirely his own work, it should be said, thanks to the heroic efforts of his even untidier office-mate). But when it comes to managing information, there seems to be no discernible difference in the end result. The authors of this book trawl the furthest reaches of psychology, management studies, biology and physics to show why a bit of disorder is good for you. Chiefly, it creates much more room for coincidence and serendipity. Alexander Fleming discovered penicillin because he was notoriously untidy, and didn't clean a Petri dish, thus allowing fungal spores to get to work on bacteria. He remarked wryly on visiting a colleague's spotless lab: "no danger of mould here". It can also help make sense of things. Hearing depends on random movement of molecules: when they coincide with sounds from outside, they are strong enough to stimulate the inner ear. A bit of background noise on the phone enables our ears to filter out echoes. A slightly mushy photograph can be easier to understand. Music and art depend on mess. Procrastination makes sense too. America’s Marine Corps, the authors repeat (several times), never makes detailed plans in advance. Leaving important things to the last minute reduces the risk of wasting time on things that may ultimately prove not important at all. The authors are witheringly contemptuous of the bogus equation of tidiness and morality—for example in corporate "clean desk" policies. Disorder and creativity are so closely linked that any employer who penalizes the first sacrifices the second, they argue. America's professional organizers, a thriving and lucrative cult of tidiness coaches, are merchants of guilt, not productivity boosters. It's all fine, up to a point. But the book has two weaknesses. One is that it overstates the case. The case for tidiness in some environments—surgery, a dinner table or income tax returns—is really overwhelming. The other is that the book is a bit repetitive and disorganized. Even readers who love mess in their own lives don't necessarily like it in others. Paraphrase the sentence "the tidiness lobby counts the benefits of neatness, but not its costs". (para. 2)

A．Puritanism B．Transcendentalism C．Christianity D．Catholicism