更多"As to the bearing, of the following"的相关试题:
[单项选择]Which one of these statements is true of OSPF type 5 LSAs？（）
A. They are used to summarize area routes to other areas.
B. They are used in not-so-stubby areas to propagate external routes.
C. They are used to notify areas of the ASBR.
D. They are flooded to all areas except stub areas （external route）.
[多项选择]Which two of these statements describe important aspects of performing a wireless site survey？ （Choose two.） （）
A. An 802.11 g access point with a variety of antennas can be used in all standard site surveys.
B. Site surveys can be performed manually or through assisted site survey.
C. Channel power during testing starts at the default minimum and gradually increases to the maximum.
D. Overlapping access points can create performance problems.
E. Surveys should be done after hours in an office building or during reduced inventory levels in warehouses.
[单项选择]Which of the following is not a factor which can interfere with the pulse of sound and cause a variation the depth reading?（）
A. salinity
B. temperature
C. the hydrostatic pressure
D. Vessel’s speed
[单项选择]As to the piston cooling, of the following, which statement is not true?（）
A. Because the piston is exposed to very high temperature, it must be cooled
B. The lower the piston cooling temperature is, the better it is
C. Both water and lube oil can be used as coolant
D. One of the piston cooling methods is vibration cooling, with better effect
[单项选择]The bearing of tailshaft sealing equipment, which adopting the oil nature circulation is hot, the reason is（）
A. the rotate speed fluctuation
B. the ventilation tube clogged
C. the main engine accelerate so fast
D. stormy waves
[单项选择]A main bearing consists of two shells which are secured by means of studs and （）.
A. tie rods
B. through bolts
C. lead wires
D. bearing caps
[单项选择]Which term describes piston pins having bearing surfaces in both the piston bosses and connecting rod eye?（）
A. Stationary
B. Full floating
C. Semi-floating
D. Free rolling
[单项选择]Which bearing will carry the load on two small points diametrically opposite to each other?（）
A. Needle
B. Tapered roller
C. Roller
D. Ball
[单项选择]Which of the listed bearing types is an example of a solid bearing?（）
A. Piston wrist pin bushing
B. turbine bearing
C. Spring bearing
D. Diesel engine main bearing
[单项选择]Which of the following statements about transmitting distress messages by radiotelephone is INCORRECT?（）
A. If no answer is received on the designated distress frequencies，repeat the distress call on any frequency available
B. Channel 16 (156.8) may be used for distress messages
C. It is advisable to follow a distress message on 2182 kHz by two dashes of 10 to 15 seconds duration
D. Distress messages should first be transmitted on 2182 kHz
[单项选择]Which of the following statements concerning cargo is correct?（）
A. Cargoes are any type of goods transported by any type of ships
B. Cargoes are goods transported in bulk
C. Cargoes usually include goods transported in bulk and in containers
D. Cargoes are usually packaged in containers
[单项选择]Which of the following statements concerning frontal movements is TRUE（）.
A. The temperature rises after a cold front passes
B. The barometric pressure rises when a warm front passes
C. A cold front generally passes faster than a warm front
D. A warm front usually has more violent weather associated with it than a cold front
[单项选择]Which of the following centrifugal pump components converts the liquid kinetic energy of velocity to the potential energy of pressure?（）
A. Impeller
B. Electric motor
C. Volute
D. Eye
[单项选择]Which of the following descriptions best identifies the operating principal of a flash-type evaporator?（）
A. Sea water is heated to boiling temperature while under a vacuum
B. Sea water is passed over heated plates in a thin film
C. Heated sea water is injected into a vacuum chamber
D. Sea water is forced through a heated eductor
[单项选择]Which of the following relationships should occur between the temperature developed in a combustion space, and the compression ratio of the engine?（）
A. Higher compression ratios create higher temperature
B. Higher temperatures create higher compression ratios
C. low temperatures create higher compression ratios
D. Higher compression ratios create low temperatures
