更多"（） clearances in the main or crank "的相关试题:
[单项选择]Excessive clearances in the main or crank-pin bearings will sometimes be indicated by （） before any bearing knock is heard.
A. loss of flow in the fuel system
B. loss of pressure in the air system
C. loss of flow in the lubricating system
D. loss of pressure in the lubricating system
[单项选择]Lubricating oil is supplied to the crank-pin bearings in a marine diesel engine by （）.
A. internal crankshaft passages
B. immersion in oil
C. splash lubrication
D. injection lubrication
[单项选择]The crank pin journal is provided with large bores for （）.
A. lubrication
B. cooling
C. balancing purpose
D. ventilation
[单项选择]What is the crank angle between any two crank throws in the firing order of a four-stroke/cycle, in line, eight cylinder diesel engine?（）
A. 45
B. 60
C. 90
D. 100
[单项选择]Each crank is made up of two crank webs joined by a common（） to which the bottom endbearing is fitted.
A. throw
B. crankshaft
C. crankpin
D. crosshead
[单项选择]The diameter of the crank-pins should be measured with a （）.
A. salinometer
B. thermometer
C. tachometer
D. micrometer
[单项选择]The crank chamber oil （）.
A. can be recovered
B. is only supplied to cylinders
C. only feeds the main bearing
D. is a kind of detergent
[单项选择]The crank-room cover should not be opened until at least （） minutes after the engine stops.
A. 10
B. 15
C. 20
D. 30
[单项选择]With the crank in position in the engine, some measurements can be taken by a special bridge gauge and （）.
A. a micrometer
B. a bowl
C. a feeler gauge
D. a wrench
[单项选择]Operating conditions in the crank chamber are very （） those in the cylinder.
A. the same as
B. similar to
C. separated from
D. different from
[单项选择]Crank web deflection readings will give a positive indication of （）.
A. worn main bearing journals
B. torsional stress deformation
C. slack thrust bearings
D. bearing shells shim dimensions
[填空题]用户在启动PIN码保护功能后不慎将PIN码忘记，在错误的输入（）次PIN码后SIM自动上锁，手机无法接入网络，提示要求输入（）码。若输（）次错误，那么SIM卡的自毁程序将自动启动，将SIM烧毁，使用户得不偿失。
[单项选择]总分配系数d=Σwi*Kdi中，Wi为（）。
A. 矿物数
B. 矿物中元素的分配系数
C. 每种矿物在集合体中所占的重量百分数
D. 矿物种类
[判断题]脑结核球钙化在T1WI和T2WI均为高信号。
[判断题]蛛网膜囊肿在T1WI呈高信号，T2WI呈高信号。
[单项选择]The crank throws are displaced from （） to obtained the same number of degrees between the different crank throws.
A. one another
B. the other
C. each other
D. each others
[判断题]少枝胶质细胞瘤在T1WI上为低信号，T2WI为低信号。
[单项选择]The type of davit on which you must turn a crank in order to swing the lifeboat out over the ship’s side is a（）.
A. sheath-screw davit
B. gravity davit
C. radial davit
D. bruckner davit
