Concerning the E.U.，which of the following statements is wrong？（）

A . Set extends Collection. B . All methods defined in Set are also defined in Collection. C . List extends Collection. D . All methods defined in List are also defined in Collection. E . Map extends Collection.

A . All switch statements must have a default label. B . There must be exactly one label for each code segment in a switch statement. C . The keyword continue can never occur within the body of a switch statement. D . No case label may follow a default label within a single switch statement. E . A character literal can be used as a value for a case label.

A . The Chief Mate and Master of a container ship should have the proposed stowage plan ready for the stevedore upon arrival in port B . When stowed on deck of a break bulk ship，the bottom of the container must be evenly supported throughout C . With tiered containers，a 40-foot container may be stowed on top of two 20-foot containers D . Deck load calculations must take into account the square footage of the entire container bottom

A . Locating signals are transmitted by survival craft VHF transceivers B . Locating signals are transmitted by SARTs C . Locating signals are intended to facilitate the finding of a distressed vessel or its survivors D . Locating signals are not transmitted by autoalarm generator

A . For non-negative values of the left operand， the >> and >>> operators will have the same effect. B . The result of （-1 >> 1） is 0. C . The result of （-1 >>> 1） is -1. D . The value returned by >>> will never be negative as long as the value of the right operand is equal  to or greater than 1. E . When using the >> operator， the leftmost bit of the bit representation of the resulting value will always be the same bit value as the leftmost bit of the bit representation of the left operand.

A . Dehydrators must be used continuously in a refrigeration system B . A 25 ton refrigeration system has the same cooling effect as melting 25 tons of ice in 24 hours C . A thermostatic expansion valve is used to control refrigerated space temperature D . The liquid receiver functions to collect and remove non- condensable gase

A . When any vessel fails to understand the intentions of an approaching vessel she must sound the danger signal B . Only the stand-on vessel can sound the danger signal C . Distress signals may be used in place of the danger signal D . The danger signal consists of 4 or more short blasts of the whistle

A .  The session object must be declared explicity. B .  The request and response objects are available implicity. C .  The output stream is available through the implicit outStream object. D .  The servlet context is available through the implicit servletContext object. E .  The JspContext for the tag file is available through the implicit jspContext object.

A . Special tools are required for lapping or grinding B . It is impossible to throttle flow with a butterfly valve C . To close the valve, it is only necessary to turn the handle a quarter of a turn D . The butterfly valve should never be used in a freshwater system

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 container

A . At most one listener of each type can be registered with a component. B . Mouse motion listeners can be registered on a List instance. C . There exists a class named ContainerEvent in package java.awt.event. D . There exists a class named MouseMotionEvent in package java.awt.event. E . There exists a class named ActionAdapter in package java.awt.event.

A .  Objects from classes that use aggregation cannot be serialized. B .  Art object serialized on one JVM can be successfully deserialized on a different JVM. C .  The values in fields with the volatile modifier will NOT survive serialization anddeserialization. D .  The values in fields with the transient modifier will NOT survive serialization anddeserialization. E .  It is legal to serialize an object of a type that has a supertype that does NOT implement java.io.Serializable.

A . Viscosity will increase as temperature increases B . Viscosity is a measure of a fluid s internal resistance to flow C . Viscosity will decrease as temperature decreases D . Viscosity is not dependent on temperature

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

A . High conductivity of the distillate indicates distillate salinity is excessive B . Increasing the absolute pressure of the shell will increase the distillers capacity C . Mesh separators are used in evaporators to filter the distillate D . Reducing the brine density will reduce the heat lost overboard

A . Each pluggable database (PDB) has its own set of background processes. B . A PDB can have a private temp tablespace. C . PDBs can share the sysaux tablespace. D . Log switches occur only at the multitenant container database (CDB) level. E . Different PDBs can have different default block sizes. F . PDBs share a common system tablespace. G . Instance recovery is always performed at the CDB level.

A . They are particularly suited for pumping high viscosity fluids B . They are started with the discharge valve opened C . The flow of liquid is developed by imparting energy due to the rotation of an impeller D . They are always mounted in a horizontal positio

A . Fresh water may be obtained from fish B . Lifeboat covers or canopies should be washed with rain before drinking water is collected C . Fresh water may be collected from condensation inside the liferaft D . Seawater should never be consumed

A . A higher interleave depth provides more protection from burst of noise on the HFC network B . Higher interleave depth increase downstream latency C . Lower interleave depth cause some packet loss on typical HFC networks D . None ofthe above

A . It is a sailing maneuver which brings the vessel's head through the wind B . It connects the boom to the mast and allows the boom to swing freely C . It is a sailing condition where there is a loss of air flow over the sails D . None of the above

A.They are particularly suited for pumping high viscosity fluids B.They are started with the discharge valve opened C.The flow of liquid is developed by imparting energy due to the rotation of an impeller D.They are always mounted in a horizontal position

A．Children under two are charged 10% of the normal fare under any circumstances. B．The second child under two accompanying the same adult is charged .50% of the normal fare. C．A 12-year-old is charged 50% of the normal fare. D．Unaccompanied children are charged the normal fare.