When carbon is added to iron in proper ________ the result is steel.

A .https://assets.asklib.com/images/image2/2018073111062566490.png B .https://assets.asklib.com/images/image2/2018073111063366508.png C .https://assets.asklib.com/images/image2/2018073111064276655.png D .https://assets.asklib.com/images/image2/2018073111065055238.png

A . Carbon dioxide is corrosive when exposed to fire B . Carbon dioxide should be applied slowly to a large engine room fire C . Its total cooling effect is far greater than water D . Its smothering effect is excellent for class B fire

A .

A . first to the bottom of the flaming area，sweeping from side to side，and following the flames upward B . in a circular motion from the middle of the bulkhead outward C . to the top of the flaming area，sweeping from side to side，and working toward the bottom D . in an up-and-down motion from one side of the bulkhead to the other

A . List icon  B . Object group  C . PL/SQL library  D . Key-Listval trigger&e

A . Agent Routing   B . Historical Reporting   C . Conditional Routing   D . Prioritized Queueing   E . Agent Queueing

A . the "snow" which is sometimes discharged along with the gas is toxic B . prolonged exposure to high concentrations of C0 gas causes suffocation C . rapid dissipation of the C0 vapor D . the C0 gas is lighter than air and a large amount is required to extinguisha fire near the deck

A . flashing point B . combustion point C . auto-ignition point D . lower explosive limit

A .  Adds to all nodes with the cluster running. B .  Adds to all nodes with the cluster stopped. C .  Adds with the cluster running，uses "Lazy Update" to perform the logical volume synchronization. D .  Adds to all nodes with the cluster running but requires the volume groups to be exported andimported after.

A . on the lee side B . on the windward side C . with the wind dead ahead D . with the wind from aster

A . supervisory recording   B . WrapUp timer   C . sending e-mails   D . keystroke macros   E . text chat &e

A .  Nothing，SSA can support a maximum of 8 initiators per loop. B .  The RAID5 implementation on SSA will only support two initiators per loop. C .  SSA can only support four initiators per lop when using the fat write option. D .  The RAID implementation can be used with three initiators only if the fast write cache option is used on all adapters.

A . general B . usual C . ordinary D . commo

A．transformation of language is usually seen in social issues. B．transformation of language is also tracked in political debate. C．transformation of language is generated in the age of information. D．transformation of language is legitimate to a certain extent.

A．AnexpenseamountenteredintheBalanceSheetandStatementofOwner’sEquityDebitcolumn． B．ArevenueamountenteredintheBalanceSheetandStatementofOwner’sEquityCreditcolumn． C．AnassetamountenteredintheIncomeStatementandStatementofOwner’sEquityDebitcolumn． D．AliabilityamountenteredintheIncomeStatementandStatementofOwner’sEquityCreditcolumn． E．AnexpenseamountenteredintheBalanceSheetandStatementofOwner’sEquityCreditcolumn．

anything something everything nothing

The first study was done at Duke University in Durham, North Carolina. Researchers pumped extra carbon dioxide into a test area where pine trees were growing. The trees grew thirty-four percent faster during the first three years. However, in time, the trees slowed to about their normal growth rate. The scientists say this is because trees need other nutrients, such as nitrogen. In the second study, researchers from Duke and Bowdoin College in Brunswick, Maine examined the soil around trees. They discovered that as the leaves broke down into the soil, all the carbon was not trapped in the soil. Much of it was released into the atmosphere as carbon dioxide. The findings of the two studies were published last month in Nature magazine. They suggest there is limited value in planting trees to reduce the carbon dioxide pollution in the atmosphere. Forest planting has been a part of negotiations on a world agreement to reduce greenhouse gases that scientists believe cause global warming. The United States, Canada, Japan and some other industrial countries have supported the idea. But this new research suggests the idea is not as effective as environmental activists had thought. Scientist Ram Oren of Duke University led the study on tree growth. He says that earlier estimates on the ability of forests to absorb carbon dioxide were overly hopeful. Some scientists not involved in the studies say the research provides some of the first evidence on how trees react to carbon dioxide. Other scientists say the research disputes a belief among some coal and power companies. The companies say that rising levels of carbon dioxide in the atmosphere will not create harmful global warming. Instead, they say it will increase forests and other plants. What is the purpose of this passage？ A．Introduce some new ideas about the relationship between trees and carbon dioxide. B．Introduce recent condition of global industrial pollution. C．Call on people to plant more trees to reduce greenhouse gases. D．Point out that power companies should be responsible for the rising levels of carbon dioxide.

A．ease competition among themselves. B．lower their operational costs. C．avoid complaints from consumers. D．provide better online services.

A．rates B．thicknesses C．proportions D．densities