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【单项选择题】

Are trees（）along the road right now?

A、A.plant

B、B.planting

C、C.being planted

D、D.planted

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更多“Are trees（）along the road right now?”相关的问题
第1题
[单选题] Refer to the exhibit. All multilayer switches are running PIM dense mode. Recipient A and Recipient B are sending IGMPv2 joi n messages to their respective multilayer switches. Which statement is true?（）

A、The Multicast Server is the root of the multicast tree. Switches 1, 3, 4, and 5 will participate in the multicast tree once pruning has taken place.  B、The Multicast Serv er is the root of the multicast tree. Switches 4 and 5 will participate in the multicast tree once pruning has taken place.  C、Switch 3 is the root of the multicast tree. Switches 3,4, and 5 will participate in the multicast tree once pruning has taken place.  D、Switch 3 is the root of the multicast tree. Switches 1,3,4, and 5 will participate in the multicast tree once pruning has taken place.  E、Switch 1 is the root of the multicast tree. Switches 1,4, and 5 will participate in the multicast tree once pruning has taken place.  F、Switch 1 is the root of the multicast tree. Switches 1,3,4, and 5 will participate in the multicast tree once pruning has taken place.  

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第2题
[单选题] You are a network techn ician, study the exhibit carefully. All multilayer switches are running PIM sparse mode. Host CKB and Host CKF are sending IGMPv2 join messages to their respective multilayer switches. Which description is correct?（）

A、Switches 1, 2, 3, and 6 will part icipate in the multicast tree once pruning has taken place.  B、Switches 2 and 6 will participate in the multicast tree once pruning has taken place.  C、Switches 1, 2, 3, and 6 will participate in the multicast tree.  D、The multicast server is the rendez vous point of the multicast tree.  

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第3题
[多选题] You issued the following RMAN command to back up the database: Which two statements are true regarding the backup performed?（）

A、Archived redo log files are backed up along with data files.  B、Only data files are backed up and a restore point named FY06Q4 is created.  C、Archived log files are backed up along with data files, and the archived log files are deleted.  D、The command creates a restore point named FY06Q4 to match the SCN at which this backup is consistent.  

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第4题
[单选题] The people in this city have planted（）trees along both sides of the streets.

A、a great deal of  B、much  C、a large amount of  D、a lot of  

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第5题
[单选题] Which command enhances the 802.1D convergence time on ports that are connected to hosts?（）

A、spanning-tree backbonefast  B、spanning-tree uplinkfast  C、spanning-tree portfast  D、spanning-tree cost512  

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第6题
[] Which command enhances the 802.1D convergence time on ports that are connected to hosts?（）

A、A. spanning-tree backbonefast  B、B. spanning-tree uplinkfast  C、C. spanning-tree portfast  D、D. spanning-tree cost512  

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第7题
[单选题] The points on the earth’s surface where the magnetic dip is 90° are（）.

A、Along the magnetic equator  B、Connected by the isoclinal line  C、The isopors  D、The magnetic poles  

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第8题
[] On the pole side of the high pressure belt in each hemisphere，the pressure diminishes. The winds along these gradients are diverted by the Earth’s rotation toward the east and are known as the（）.

A、A.geostrophic winds  B、B.doldrums  C、C.horse latitudes  D、D.prevailing westerlies  

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第9题
[单选题] A mean sun is used as the reference for solar time for three reasons. Which reason is NOT a cause for use of a mean sun?（）

A、The motion of the apparent sun is along the ecliptic  B、Measurement of time is along the celestial equator  C、The speed of the Earth's revolution is not constant  D、There are variations in the Earth's rotational speed  

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