空气预热器的作用是（)。A．降低排烟温度，节省燃料B．降低排烟温度，提高热效率C．吸收炉膛中的辐射热

A. It is loaded with the FIXED status.

B. It is loaded with the ACCEPTED status.

C. It is not loaded with the ENABLED status.

D.It is not loaded with the ACCEPTED status.

A. It collects statistics into the pending area in the data dictionary

B. It creates a virtual hidden column in the CUSTOMERS_OBE table

C. It collects statistics with AUTO_SAMPLE_SIZE for ESTIMATE_PERCENT

D. It creates a histogram to hold skewed information about the data in the columns

A. The ip classless command is enabled by default in recent versions of IOS.

B. The ip classless command should only be enabled when static routing is being used instead of a routing protocol.

C. The ip classless command should be enabled by the network administrator whenever RIPv1 or IGRP is being used.

D. The ip classless command should be enabled by the network administrator whenever OSPF, RIPv2, or EIGRP is being used.

Which of the following statement is NOT about the two-year study？

A．Researchers will test in more seismically active places.

B．Researchers will drill more deep holes along the fault lines.

C．Researchers need to eliminate some factors which might affect seismic readings.

D．Researchers need to do more in their detecting systems.

A. It must be issued before the network command to enable the OSPF pr ocess for IPv6.

B. It must be issued after the network command to enable the OSPF process for IPv6.

C. It must be issued in router global configuration mode to enable the OSPF process for IPv6.

D. It must be issued in interface configuration mode to ena ble the OSPF process for IPv6.

A.It requires the RELOAD, FILE, and DROP privileges

B.It closes and reopens all log files

C.It closes and sends binary log files to slave servers

D.It flushes dirty pages in the buffer pool to the REDO logs

Which statement about “stream of consciousness” as a literary term is NOT TRUE？

A.It is a mode of narration with smooth flow of language as well as thoughts.

B.It is a mode of narration in which perceptions mingle with conscious and half-conscious thoughts, memories and feelings.

C.It is a mode of narration that is often discontinuous and random, reflecting the confused individual and the chaotic world.

D.It is a mode of narration that reproduces the continuous flow of a character’s mental process.

Which statement is the true description about IWC？

A．The purpose of the foundation of IWC is to protect whales from being killed.

B．All the members of IWC have a history of whaling.

C．IWC decided to stop commercial whaling in the mid-1960s.

D．IWC has no right to exert any punishment on Japan even if Japan continues the slaughter.

Which statement is true about the movie？

A．It is catching on.

B．It is on tonight.

C．It's a love story.

D．It's out-dated.