单选题
发布日期:2021-03-22
air filtration is inadequate
engine coolant leaking into the lube oil
fuel oil is leaking into the lube oil
the piston rings are excessively worn
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重型轨道车由于机械故障不能继续运行,或由于其他原因在区间被迫停车时,司机应迅速鸣示()声的报警信号。
词之起源的传统说法是( )。
前立柱不落可能是什么原因?
龈下边缘的缺点是( )。
药材川芎的气味特征是()
蛋黄是蛋白质,动物的肌肉、皮肤、血液、乳汁、以及发、毛、蹄、角、鳞也是蛋白质。
大量吸入氯乙烯引起的主要症状是()
简述市场环境对经济活动区位的影响。
树脂溶胀率与哪些因素有关?
砂浆的和易性包括()。
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The lube oil cooler is located after the lube oil filter in order for ()
The lube oil cooler is located after the lube oil filter in order for ()