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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(jìn)??(jin)一??(yi)步??(bu)加??(jia)劇?(ju)了??(le)國(guó)??(guo)際?(ji)油??(you)價(jià)??(jia)的??(de)不?(bu)確??(que)定??(ding)性??(xing)??。??美??(mei)國(guó)??(guo)對(duì)??(dui)進(jìn)??(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(guó)??(guo)內(nèi)??(nei)石??(shi)油??(you)開(kāi)??(kai)采??(cai)和??(he)運(yùn)??(yun)輸??(shu)的??(de)成??(cheng)本??(ben)??，間??(jian)接??(jie)推??(tui)高??(gao)油??(you)價(jià)??(jia)??。同??(tong)時(shí)??(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(jì)?(ji)放??(fang)緩??(huan)預(yù)??(yu)期??(qi)??，又?(you)對(duì)??(dui)油??(you)價(jià)??(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(guó)??(guo)際??(ji)油??(you)價(jià)??(jia)的??(de)波??(bo)動(dòng)??(dong)更?(geng)加??(jia)難??(nan)以??(yi)預(yù)?(yu)測(cè)??(ce)???！　×??(ling)一??(yi)方??(fang)面??(mian)??，市??(shi)場(chǎng)??(chang)人??(ren)氣??(qi)備??(bei)受?(shou)打??(da)擊??(ji)??，投??(tou)機(jī)??(ji)者??(zhe)紛??(fen)紛??(fen)規(guī)??(gui)避??(bi)交?(jiao)易??(yi)風(fēng)??(feng)險(xiǎn)??(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(jī)??(ji)性??(xing)倉(cāng)??(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(fēng)??(feng)險(xiǎn)??(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??(he)約??(yue)的?(de)多??(duo)頭??(tou)倉(cāng)??(cang)位??(wei)減??(jian)少??(shao)4470萬(wàn)??(wan)桶??(tong)??，至??(zhi)46750萬(wàn)??(wan)桶??(tong)??，而??(er)空??(kong)頭?(tou)倉(cāng)??(cang)位??(wei)也??(ye)減??(jian)少??(shao)到?(dao)24980萬(wàn)??(wan)桶??(tong)??。。