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【单选题】
胆囊三角(Calot三角)的境界是A.
胆囊管、肝总动脉及肝脏下面
B.
胆囊管、肝总管和肝脏下面
C.
肝左动脉、肝总管及肝脏下面
D.
胆总管、十二指肠及肝固有动脉
E.
肝固有动脉、胆囊管及十二指肠上部
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【单选题】Bob is very______, you never know what he is thinking.
A.
conservative
B.
reserved
C.
dead
D.
resent
【单选题】What does the man offer to do?
A.
Give the woman directions
B.
Send the woman a brochure
C.
Reserve a seat for the woman
D.
Waive the woman's registration fee
【单选题】What point does the author intend to put across in the first paragraph?
A.
Teaching and research are two contradictory fields.
B.
Research can never be overemphasized.
C.
The relationship between research and teaching should not be simplified.
D.
It is not right to overestimate the importance of teaching.
【单选题】If you were inspecting the valve springs on an auxiliary diesel engine, your best indication of impending spring failure would be ________.
A.
a glazed surface on the spring
B.
nicks in the protective coating
C.
a build up of sludge deposits
D.
cracks in the surface of the spring
【单选题】电火花加工中精规准用于精加工,与粗规准相比,精规准多采用( )的电流峰值、( )频率和( )的脉冲宽度。 A 小,高,短 B 大,高,短 C 小,低,长 D 大,低,长
A.
B.
C.
D.
D
【单选题】Your vessel has a midships engine room and the cargo is concentrated in the end holds．The vessel is ______．
A.
sagging with tensile stress on main deck
B.
sagging with compressive stress on main deck
C.
hogging with tensile stress on main deck
D.
hogging with compressive stress on main deck
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