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1.
(2023高一上·太原期末)
如圖為轎車常用的剪式千斤頂。若車輪剛被頂起時(shí),千斤頂兩臂間的夾角為 , 汽車對(duì)千斤頂?shù)膲毫?img class="mathml" src="http://math.21cnjy.com/MathMLToImage?mml=%3Cmath+xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F1998%2FMath%2FMathML%22%3E%3Cmrow%3E%3Cmn%3E1.5%3C%2Fmn%3E%3Cmo%3E%C3%97%3C%2Fmo%3E%3Cmsup%3E%3Cmrow%3E%3Cmn%3E10%3C%2Fmn%3E%3C%2Fmrow%3E%3Cmn%3E4%3C%2Fmn%3E%3C%2Fmsup%3E%3Cmtext%3EN%3C%2Fmtext%3E%3C%2Fmrow%3E%3C%2Fmath%3E" style="max-width:100%;vertical-align: middle;"> , 若用國際單位制基本單位來表示這一數(shù)據(jù),正確的是( ?。?
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