在缺O https://assets.asklib.com/psource/20169204394406042.gif 的条件下,脂肪不能供能。()
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在血液中,98%以上的O https://assets.asklib.com/psource/20169218133932000.gif 和94%以上的CO https://assets.asklib.com/psource/20169218133932000.gif 是以化学结合的形式运输的。()
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设L是从原点O沿x轴到点(1,0),然后沿 https://assets.asklib.com/images/image2/2017051116084885694.jpg ,到点(0,1)的曲线,则 https://assets.asklib.com/images/image2/2017051116091387907.jpg =()。
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某构件受力简图如右图,则点O的力矩Mo为( )。https://assets.asklib.com/source/1465986734452043866.png
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杆OA绕固定轴O转动,长为 https://assets.asklib.com/psource/201511021038528468.png 。某瞬时杆端A点的加速度为 https://assets.asklib.com/psource/2015110210391344547.png ,如图所示。则该瞬时OA杆的角速度及角加速度为()。 https://assets.asklib.com/psource/2015110210395637042.png
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O,O-二乙基丙基磷酸酯的构造式是()。https://assets.asklib.com/psource/2016032015395411290.jpg
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电路如图所示,则输出电压U o 为:() https://assets.asklib.com/psource/2015102716195119947.jpg
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某构件受力简图如右图,则点O的力矩M为( )https://assets.asklib.com/source/1462529116885063002.png
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如图所示轮子O点为固定铰支座约束,受力 https://assets.asklib.com/psource/2015110209360697985.png 和力偶矩为m的力偶作用而平衡,下列说法正确的是()。 https://assets.asklib.com/psource/2015110209362618773.png
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质量为m,长度为L的均质杆铰接于O点,A端固结一质量为m的质点如图示。当OA杆以角速度w绕O轴转动时,系统对轴O的动量矩的大小为()。 https://assets.asklib.com/psource/2016071916413125244.jpg https://assets.asklib.com/psource/2016071916413655485.jpg
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代谢性碱中毒可使缺O https://assets.asklib.com/psource/20169231682653594.gif 者组织缺O https://assets.asklib.com/psource/20169231682653594.gif 更严重,是由于碱中毒引起()
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如图所示等径有压圆管断面1的压强水头P 1 /γ=20mH 2 O,两断面中心点高差H=1m,断面1-2的水头损失 https://assets.asklib.com/psource/2015102714492594935.jpg =3mH 2 O,则断面2的压强水头p 2 /γ,为:() https://assets.asklib.com/psource/2015102714492653210.jpg
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电路如图所示,能够实现u o =-u i 运算关系的电路是:() https://assets.asklib.com/psource/201510271616069949.jpg https://assets.asklib.com/psource/2015102716161591877.jpg
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图中均质细圆环质量为m,半径为R,可绕环上O点并垂直于圆环平面的轴转动。已知角速度为w,顺时针转向,试求圆环对O轴的动量矩的大小及转向() https://assets.asklib.com/psource/2016071916420715629.jpg https://assets.asklib.com/psource/2016071916420917025.jpg
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在定平面O https://assets.asklib.com/psource/2015110210314096831.png https://assets.asklib.com/psource/201511021031507549.png 内,杆OA可绕轴O转动,杆AB在点A与杆OA铰接,即杆AB可绕点A转动。该系统称为双摆,其自由度数为:() https://assets.asklib.com/psource/2015110210320052314.png
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一个大气压下,38℃时,血浆中的CO https://assets.asklib.com/psource/20169206051528857.gif 溶解度是O https://assets.asklib.com/psource/20169206051528857.gif 溶解度的()
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动脉血中物理溶解的O https://assets.asklib.com/psource/20169202043545144.gif 仅占总量的()
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下列物质与H 2 O 2 水溶液相遇时,能使H 2 O 2 显还原性的是:()已知: https://assets.asklib.com/psource/2016071715560819005.jpg
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均质圆盘质量为m,半径为R,在铅垂平面内绕O轴转动,图示瞬时角速度为ω,则其对O轴的动量矩和动能大小分别为() https://assets.asklib.com/psource/2016071917365547537.jpg https://assets.asklib.com/psource/2016071917365864728.jpg
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质量为m,长度为 https://assets.asklib.com/psource/2015110209560869610.png 的均质杆铰接于O点,A端固结一质量为m的质点如图示。当OA杆以角速度w绕O轴转动时,系统对轴O的动量矩的大小为()。 https://assets.asklib.com/psource/2015110209562211921.png
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图5-5-12中O为直角三角形ABD斜边上的中点,y。z轴为过中点O且分别平行于两条直角边的两根轴,关于惯性积和惯性矩有四种答案:() https://assets.asklib.com/psource/2016071910394273460.gif https://assets.asklib.com/psource/2016071910394766138.jpg
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如图所示圆截面直径为d,则截面对O点的极惯性矩为:() https://assets.asklib.com/psource/2016071911521678131.jpg https://assets.asklib.com/psource/2016071911521855704.jpg
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点在铅垂平面o https://assets.asklib.com/psource/2015110210105736598.png https://assets.asklib.com/psource/2015110210110825219.png 内的运动方程式 https://assets.asklib.com/psource/2015110210112362464.png 中,t为时间,V0,g为常数。点的运动轨迹应为()。
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点在平面O https://assets.asklib.com/psource/2015110210251489254.png https://assets.asklib.com/psource/2015110210252413951.png 内的运动方程 https://assets.asklib.com/psource/2015110210253362535.png 式中,t为时间。点的运动轨迹应为:()
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如下图,力F对O点的力矩为()。https://assets.asklib.com/psource/2014111211444218288.png