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【单选题】
汽轮机的冷油器属于( )。A.
表面式换热器;
B.
混合式换热器;
C.
蓄热式换热器;
D.
立式换热器
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举一反三
【单选题】A man and his wife had a small bar near a station．The bar often stayed open until after midnight，because people came to drink there while they were waiting for trains． At two oclock one morning，one ma...
A.
until 12 oclock in the evening
B.
until early next morning
C.
all day and all night
D.
until after 12 oclock in the evening
【简答题】Which of the following equipmen is excluded from the required GMDSS.equipmeng?A. Weather FAX receiver. B. 9G SART C. 406 MHZ EPIRB. D. VHF DSC watching recerver.
【判断题】May 2011, DC announces they are ending all ongoing titles to relaunch them in a line named “New 52.”
A.
正确
B.
错误
【单选题】A man and his wife had a small bar near a station. The bar often stayed open until after midnight, because people came to drink there while they were waiting for trains. At two o'clock one morning, on...
A.
until after 12 o'clock in the evening
B.
until early next morning
C.
all day and all night
D.
until 12 o'clock in the evening
【单选题】The DC buses are separated by the DC tie relay. The DC tie relay is normally open, but closes if DC power is lost on either the left or right DC bus. the DC tie relay may be opened by un-latching any ...
A.
the DC buses are connected with each other all the way
B.
the contacts of the DC tie relay are normally open
C.
the DC tie relay is a race between teams in which each member of the team runs or swims one section of the race
D.
un-latching any BTB switch means the BTB switch contacts can not be disconnected
【单选题】Dear editor, Why do newspapers have so many advertisements for electronic (电子的) equipment? Last Sunday I counted ads. For seven kinds of televisions and thirteen kinds of radios in the Youth Journal. ...
A.
a department star
B.
a shop that sells electronic equipment
C.
a local newspaper
D.
a hotel where the writer stayed
【多选题】下列嗜铬细胞瘤切除术的术前准备中，正确的是（）
A.
酚妥拉明为短效α-受体阻滞剂，用于嗜铬细胞瘤的诊断及控制突发高血压或危象
B.
因多数嗜铬细胞瘤以分泌去甲肾上腺素为主，β-受体阻滞剂并非常规应用
C.
患者一般循环血容量比正常人减少20%~50%，血细胞比容及血红蛋白浓度增加
D.
为减少病人的紧张、焦虑使血压升高，应给予适当的镇静药物
E.
术前药可选用阿托品、东莨菪碱、盐酸戊乙奎醚等
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