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 （） 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。
西方典型论发展的三个阶段是（）。 类型说。 个性典型观。 共性与个性统一说。 马克思主义典型观。 阶级论典型说。
外板的端接缝应放在什么部位？
The International Regulations for Preventing Collisions at Sea contain the requirements for （）. lights that must be displayed on anchor buoys。 the display of load line markings。 minimum horsepower for tugs involved in rig moves。 lighting of mobile offshore drilling units being towed。
TD-LTE语音最终的目标方案是（） CSFB。 VO-LTE。 CS。 OTT。
（）策略也称试探性策略，是在客户并不确定购买，营销员不了解客户需要时常用的策略。
