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　　其??(qi)二??(er)?，懲??(cheng)罰??(fa)性??(xing)關(guān)??(guan)稅??(shui)政??(zheng)策??(ce)將??(jiang)導(dǎo)??(dao)致??(zhi)全??(quan)球??(qiu)貿(mào)??(mao)易??(yi)成??(cheng)本??(ben)上??(shang)升??(sheng)?，迫??(po)使??(shi)石??(shi)油??(you)貿(mào)??(mao)易??(yi)改??(gai)道??(dao)?，進?(jin)一??(yi)步??(bu)加?(jia)劇??(ju)了??(le)國??(guo)際??(ji)油??(you)價??(jia)的??(de)不??(bu)確??(que)定??(ding)性?(xing)??。??美??(mei)國??(guo)對??(dui)進??(jin)口??(kou)鋼??(gang)鐵??(tie)和??(he)鋁??(lv)加??(jia)征??(zheng)關(guān)??(guan)稅??(shui)?，增??(zeng)加??(jia)國??(guo)內(nèi)??(nei)石??(shi)油??(you)開??(kai)采??(cai)和??(he)運??(yun)輸??(shu)的??(de)成??(cheng)本??(ben)?，間??(jian)接??(jie)推??(tui)高??(gao)油??(you)價??(jia)??。同??(tong)時??(shi)?，貿(mào)??(mao)易??(yi)摩??(mo)擦??(ca)導(dǎo)??(dao)致??(zhi)的??(de)全??(quan)球??(qiu)經(jīng)??(jing)濟??(ji)放?(fang)緩??(huan)預(yù)??(yu)期??(qi)?，又??(you)對??(dui)油??(you)價??(jia)形??(xing)成??(cheng)了??(le)下??(xia)行??(xing)壓??(ya)力??(li)??。這??(zhe)種??(zhong)復(fù)??(fu)雜??(za)的??(de)相??(xiang)互??(hu)作?(zuo)用??(yong)使??(shi)得??(de)國?(guo)際??(ji)油??(you)價??(jia)的??(de)波??(bo)動??(dong)更??(geng)加??(jia)難??(nan)以??(yi)預(yù)??(yu)測??(ce)???！　×??(ling)一??(yi)方??(fang)面??(mian)??，市??(shi)場??(chang)人??(ren)氣??(qi)備??(bei)受??(shou)打??(da)擊??(ji)??，投??(tou)機??(ji)者??(zhe)紛??(fen)紛??(fen)規(guī)??(gui)避??(bi)交??(jiao)易??(yi)風??(feng)險?(xian)??。??渣??(zha)打?(da)銀??(yin)行??(xing)原??(yuan)油??(you)基??(ji)金??(jin)經(jīng)?(jing)理??(li)綜??(zong)合??(he)定??(ding)位??(wei)指??(zhi)數(shù)??(shu)環(huán)??(huan)比??(bi)下??(xia)降??(jiang)6.9??，而??(er)所??(suo)有??(you)主??(zhu)要??(yao)產(chǎn)?(chan)品??(pin)(取??(qu)暖??(nuan)油??(you)、柴??(chai)油??(you)和??(he)汽??(qi)油??(you)混??(hun)合??(he)料??(liao))的??(de)相?(xiang)應(yīng)??(ying)指??(zhi)數(shù)??(shu)均?(jun)環(huán)??(huan)比??(bi)下??(xia)降??(jiang)??。專??(zhuan)家??(jia)指??(zhi)出??(chu)??，目??(mu)前?(qian)投??(tou)機??(ji)性??(xing)倉?(cang)位??(wei)的??(de)平?(ping)衡??(heng)已??(yi)轉(zhuǎn)??(zhuan)向??(xiang)空??(kong)頭??(tou)??，但??(dan)空??(kong)頭??(tou)和?(he)多??(duo)頭??(tou)都??(dou)在??(zai)減??(jian)少??(shao)交?(jiao)易??(yi)規(guī)?(gui)避??(bi)風??(feng)險??(xian)??。3月??(yue)初??(chu)??，4種??(zhong)主??(zhu)要??(yao)布??(bu)倫??(lun)特??(te)原??(yuan)油??(you)和??(he)西??(xi)得??(de)州??(zhou)中??(zhong)質(zhì)??(zhi)原??(yuan)油??(you)(WTI)合祝(he)約??(yue)的??(de)多??(duo)頭??(tou)倉??(cang)位??(wei)減??(jian)少??(shao)4470萬??(wan)桶??(tong)??，至??(zhi)46750萬??(wan)桶??(tong)??，而??(er)空??(kong)頭??(tou)倉??(cang)位??(wei)也??(ye)減??(jian)少??(shao)到?(dao)24980萬??(wan)桶??(tong)??。。