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单选题
Seawater may be used for drinking（）.
A
under no conditions
B
at a maximum rate of two ounces per day
C
if gathered during or immediately after a hard rain
D
after mixing with an equal quantity of fresh water
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The man page for command shows the following syntax: The man page for command shows the following syntax: command [ -a | -b ] Which of the following statements is true regarding this entry?（）A、Either the -a or flag -b may be used, but not both.B、If the flag -a is used then the flag -b also must be used.C、One of the -a or -b flags must be used, but not both at the same time.D、Both the flags may be used together, but neither are mandatory.
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单选题When collecting condensation for drinking water，（）.A
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单选题A
It’s another possible use for seawater.B
It’s necessary for growing vegetables in hot climates.C
It’s used for producing electricity in U.S.D
It makes people comfortable in hot days.
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单选题The proximity of pack ice may be indicated by（）.A
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glare on clouds on the horizonC
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单选题（） is used for washing and drinking.A
The ballast systemB
The salt water systemC
The bilge systemD
The domestic system
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单选题Which statement concerning the collection of fresh water is FALSE?（）A
Fresh water may be obtained from fishB
lifeboat covers or canopies should be washed with rain before drinking water is collectedC
Fresh water may be collected from condensation inside the life-raftD
Freshwater cannot be produced from standing seawater
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单选题（）are used for anchor gear in marine work where the chains must withstand the corrosive effects of seawater.A
ChainsB
WiresC
RopesD
Lines
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单选题Which statement is true about the database and database-user used during installation of IMS Server？（）A
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A preexisting database may be used but a new database user has to be created during installation.C
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A preexisting database and user cannot be used； a new database and user are created during installation.
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单选题Which of the following statements is true regarding the VERSIONS BETWEEN clause？（）A
The VERSIONS BETWEEN clause may be used in DML statements.B
The VERSIONS BETWEEN clause may be used in DDL statements.C
The VERSIONS BETWEEN clause may not be used to query past DDL changes to tables.D
The VERSIONS BETWEEN clause may not be used to query past DML statements to tables.
考题
单选题Seawater may be used for drinking water （）.A
at a maximum rate of two ounces per dayB
after mixing with an equal quantity of fresh waterC
if gather during or immediately after a hard rainD
under no circumstance
考题
单选题Seawater may be used for drinking（）.A
under no conditionsB
at a maximum rate of two ounces per dayC
if gathered during or immediately after a hard rainD
after mixing with an equal quantity of fresh water
考题
单选题Which statement concerning the collection of fresh water is FALSE?（）A
Fresh water may be obtained from fishB
Lifeboat covers or canopies should be washed with rain before drinking water is collectedC
Fresh water may be collected from condensation inside the liferaftD
Seawater should never be consumed
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