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【简答题】
一理想卡诺热机的效率为40%，完成一次循环对外作功400J，则每次循环从高温热源吸收的热量为（ ）J。
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知识点：
皮皮学刷刷变学霸
举一反三
【单选题】Visual examination (endoscopic) of the abdomen:
A.
Gastroscopy
B.
Laparoscope
C.
Gastrotomy
D.
Laparoscopy
E.
Laparotomy
【单选题】质量m为10kg的木箱放在地面上,在水平拉力F的作用下由静止开始沿直线运动,其拉力随时间的变化关系如图所示。若已知木箱与地面间的摩擦系数μ为0.2,取g=10 m/s2 ,那么在t=7s时,木箱的速度大小为:( )
A.
2.5 m/s
B.
2 m/s
C.
3 m/s
D.
4 m/s
【单选题】In reference to the lymphatics of the abdomen
A.
The thoracic duct receives lymph from the lower extremities only
B.
Very few lymph nodes are associated with the abdominal aorta
C.
Lymph from the intestine may be whitish after a fatty meal due to absorption of fat
D.
Lymphatic return from the GI tract is limited because the GI tract has a sparse lymphatic capillary bed
E.
The cistema chyli is located at the level of the 4th lumbar vertebra
【简答题】翻译：abdomen
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