单选题
Proper lubrication of the main bearing is more easily obtained in a single acting four-stroke/cycle diesel engine than in a single acting two-stroke/cycle diesel engine because （）
发布日期：2021-03-22
bearing pressure in a four-stroke/cycle acting single diesel engine is continually reversed
bearing pressure in a two-stroke/cycle single acting diesel engine is continually reversed
the maximum bearing pressure is higher in a single acting two-stroke/cycle diesel engine
two-stoke/cycle diesel engines require more complicated lubrication piping
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投保人和保险人在订立保险合同时不预先确定保险标的的保险价值，仅载明保险金额作为保险事故发生后赔偿最高限额的保险合同属于（）。
治疗急性非淋巴细胞白血病（）。
关于第三套人民币下列说法正确的有哪些？（）
以下哪几项为面颈部韧带（）.
税务行政规章对经营活动中违法行为，没有违法所得的，设定的罚款不得超过（）。
《官话和合本圣经》（简称“和合本”）出版面世的时间是：（）
信号发生器的分类有几种？
不具治疗性医疗行为不包括（）。
突发事件预防中的最高目标是指（）。
胃壁由外向内的正确分层为（ ）。
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