某轮真航向345°,船速15 kn,1052时测得灯塔A的TB318°.5,1126又测得A的TB300°,则正横灯塔A的时间和距离应为:
A. 1200,8'.5
B. 1150,8'.5
C. 1150,6'.0
D. 1200,6'.0
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下面哪个是等价类分类
A. 有效等价类
B. 中间等价类
C. 无效等价类
D. 顶层等价类
10
A. x>10
B. x<=10
C. x>=100
D. x<100
【单选题】共享单车自投入运行以来,为解决“最后一公里”提供了便利,随着共享单车的普及,私自占有或恶意破坏共享单车的现象也越来越多。如何治理针对共享单车的不文明行为,让共享单车在共治中远行,这是( )
A. 环境道德的要求
B. 社会公德的要求
C. 职业道德的要求
D. 家庭美德的要求
Valentine’s Day probablyhasitsoriginintheancientRomancelebration called Lupercalia (牧神节). It was celebrated on February 15. In the Roman calendar February was in the spring. The celebration honored the gods Lupercus and Faunus as well as the twin brothers Romulus and Remus, the legendary founders of Rome. As part of the ceremony the priests paired up young men and women. The girls’ names were placed in a box and each boy drew a girl’s name. The couple was paired then until the next Lupercalia.In 260 AD the emperor Claudius II, called Claudius the Cruel, decided that young soldiers would only be distracted by marriage and so ordered that young men may not marry. Valentinus (Valentine), a Christian priest, defied the emperor and marry young people in secret. He was caught and executed on February 14, the eve of Lupercalia. His name became associated with young love forever after. In 496, Pope Gelasius set aside February 14 to honor him as Saint Valentine and it has been St. Valentine’s Day ever since.In the Middle Ages some of the customs of the Lupercalia still persisted in spite of the attempts of the Church to put an end to these non-Christian customs and Christianize the holiday. Both men and women drew names from a bowl to see who their valentines would be. They would wear the names on their sleeves for a week. Today we still sometimes “wear our hearts on our sleeves” when we cannot conceal our feelings.In the 1600s, it became common to give flowers, particularly the rose, as a sign of love as the “language of flowers”. This came to Europe from Turkey. The color and placement of the rose held a special significance--a red rose, for example, meant beauty. Flowers have been part of Valentine’s Day ever since1.Whatdoesthepassagemainlytellus?A.ThecustomofValentine’sDay.B.AstoryabouthowValentinusdefiedtheemperor.C.Therelationshipbetweenmarriageandreligion.D.TheoriginofValentine’sDay.2.Youngsoldierswerenotallowedtomarrybecausetheemperorwasafraidthat______.A.theywouldassociatewithSt.ValentineB.theywouldn’tconcentrateontheirjobC.theywoulddefytheemperor’sorderD.theyweretooyoungtomarry3.Whatdoestheword“defied”(underlinedinParagraph2)probablymean?A.Followed.B.Triedtocheat.C.Refusedtoobey.D.Condemned.4.ThedayFebruary14hasbeenSt.Valentine’ sdaysince______.A.260ADB.496ADC.thefoundingofRomeD.theMiddleAges5.AccordingtoParagraph3,whatdoesthephrase“wearourheartsonoursleeves”mean?A.Tohideourtruefeelings.B.Toshowourtruefeelingsopenly.C.Todemonstrateourlove.D.Tokeepourfeelingsinourmind.