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【单选题】
( )扳手能显示扭矩的大小A.
开口
B.
梅花
C.
扭力
D.
活动
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参考解析：
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皮皮学刷刷变学霸
举一反三
【单选题】Saltwater is typically provided to a refrigeration system to _____.
A.
cool the expansion valve
B.
pr refrigerant superheating
C.
condense the refrigerant gas
D.
pr motor overheating
【单选题】The interior of some diesel engine saltwater heat exchangers are protected from corrosion by the use of_______.
A.
aluminum plates
B.
lead cathodes
C.
copper baffle plates
D.
sacrificial zincs
【简答题】盒子里有9个红色跳棋，2个黄色跳棋。任意摸出一个，可能出现（ ）种情况，分别是（ ）和（ ），摸出（ ）色跳棋的可能性大。
【简答题】盒子里有9个红色棋子,2个黄色棋子。任意摸出一个,可能出现( )种情况,分别是( )和( ),摸出( )色棋子的可能性大。
【单选题】Sacrificial zinc anodes are used on the saltwater side of diesel engine heat exchangers to _____.
A.
reduce electrolytic action on heat exchanger metals
B.
keep heat transfer suces shiny and clean
C.
pr rapid accumulation of marine growth
D.
provide a protective coating on heat exchanger suces
【单选题】In a flash type evaporator, all saltwater heaters are vented through individual vent cocks to the ______.
A.
saltwater heater shell
B.
second-stage condenser
C.
atmosphere
D.
second-stage flash chamber
【单选题】If a ship is to be laid up for an indefinite period, the saltwater side of the main condenser should be____
A.
left filled with saltwater with the sea valves closed
B.
drained and dried out after closing the sea valves
C.
left filled with saltwater with the sea valves open
D.
drained an refilled with saltwater after closing the sea valves
【单选题】以下关于支原体叙述不正确的是:
A.
无细胞壁、无固定形态、可通过滤菌器
B.
无生命培养基上生长的最小原核细胞型微生物
C.
细胞膜不含胆固醇
D.
可形成油煎蛋样小菌落
E.
特异性抗体可用于 GIT 及 MIT 对支原体进行鉴定
【简答题】盒子里有9个红色跳棋子，2个黄色跳棋子．任意摸出一个，可能出现______种情况，分别是______和______，摸出______色跳棋子的可能性大．
【单选题】The steam coils in a high pressure evaporator used for saltwater service should be de-scaled with _____.
A.
a needle gun
B.
soap and water
C.
a wire brush
D.
a chipping hammer
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