【多选题】Lubricating oil in an automobile engine has several tasks to perform:
A.
Reducing friction between moving parts of the engine by lubrication.
B.
Acting as a seal to prevent leakage between parts such as pistons,rings, and cylinders.
C.
Carrying away heat by flowing between friction-generating parts.
D.
Washing away abrasive metal worn from friction surfaces.
【简答题】急慢性功能性腹泻宜首选()|病毒性腹泻宜选用()|腹痛较重或反复呕吐腹泻宜选用()A. 庆大霉素B. 山莨菪碱C. 泛昔洛韦D. 双歧杆菌E. 洛哌丁胺
【单选题】以下肥厚型心肌病的超声心动图特征的描述,错误的是()。
【单选题】Diesel engine fuel oil leakage should be drained and additional precautions provided to ____.
A.
return this oil to the proper storage tank
B.
prevent contamination of lubricating oil by fuel oil
C.
ascertain an axxurate measurement of this leakage
D.
drain cooling water system components
【多选题】下列关于药物治疗腹泻的说法中正确的是( )
A.
对于感染性腹泻,非处方药首选黄连素(盐酸小檗碱),而处方药选服左氧氟沙星、环丙沙星等
B.
对于激惹性腹泻,非处方药首选蒙脱石,而处方药选用硝苯地平
C.
消化性腹泻应根据不同原因选用不同药物,如摄食蛋白质导致消化不良宜服胰酶等
E.
急慢性功能性腹泻首选洛哌丁胺,抑制肠蠕动,延长肠内容物的滞留时间
【单选题】关于肥厚型心肌病的超声心动图征象的描述,不正确的是()。
A.
室间隔厚度>13mm,室间隔厚度与左心室厚度之比>1.3
B.
合并梗阻时有二尖瓣前叶收缩期前向运动(SAM)现象
【单选题】By , prevent leakage between parts such as pistons, rings and cylinders.