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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)紛秘(fen)紛??(fen)規(guī)??(gui)避??(bi)交??(jiao)易??(yi)風(fēng)??(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(fēng)?(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?(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)??。。