下列论述控制柴油馏程的原因正确的是()。
A、馏分轻的燃料启动性能好
B、馏分重的燃料启动性能好
C、馏分轻增加燃料的单位消耗量
D、馏分重增加设备腐蚀
参考答案:A
It was at the Grand Hotel _______ the suspect was caught, _____ was quite beyond the expectation of the police.
A.that; that
B.where; that
C.where; which
D.that; which
肠套叠应当进行手术治疗的情况有()
A.空气或钡剂灌肠复位不成功
B.病期超过3天
C.出现腹膜刺激征
D.肠坏死
E.肠穿孔