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【单选题】

Aphelion is the point where the Sun（）.

A、and Moon and Earth form a right angle

B、and Moon and Earth are in line

C、crosses the celestial equator

D、is farthest from the Earth

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更多“Aphelion is the point where the Sun（）.”相关的问题
第1题
[多选题] Which two statements are true about the rendezvous poin t (RP) in a multicast network?（）

A、The multicast sources must register with the RP to form the multicast distribution tree.  B、An RP is required only in networks running Protocol Independent Multicast dense mode (PIM DM).  C、The multicast receivers must register with the RP to form the multicast distribution tree.  D、An RP is required only in networks running Protocol Independent Multicast sparse mode (PIM SM).  E、An RP is required only in networks running Protocol Independent Multicast sparse - dense mode (PIM - SDM).  F、To form the multicast distribution tree, the multicast sources register with and the receivers join the RP.  

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第2题
[简答题] 是否能写出与MOV  POIN，  OFFSET  BUF等效的LEA语句LEA  POIN，， BUF？为什么？

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第3题
[单选题] What is the difference between the IPv6 addresses ::/0 and :: /128? （）

A、::/0 is the default route, and ::/128 is the unspecified address.  B、::/0 is the unicast address, and ::/128 is the anycast address.  C、::/0 is the anycast address, and ::/128 is the multicast address.  D、::/0 is the unicast address, and ::/12 8 is the multicast address.  E、::/0 is the unspecified address, and ::/128 is the multicast address.  F、::/0 is the anycast address, and ::/128 is the default address.  

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第4题
[单选题] Based on the show ip route isis output on R1, which statement is true? （）

A、The i su 10.1.0.0/23 route is a suppressed route.  B、The i su 10.1. 0.0/23 route is a summary route.  C、The i su 10.1.0.0/23 route is an IS - IS external route.  D、The R1 IS - IS router is an ASBR.  E、The R1 IS - IS router is an ABR that belongs to multiple IS - IS areas.  F、The R1 IS - IS router is performing route aggregation and is suppressing the more specific 10.1.0.0/23 prefix.  

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第5题
[单选题] Which of these assumptions is necessary to use in system balance? （）

A、The sensitivity is the same for the MS and the BTS.  B、The path loss is the same for the MS and the BTS.  C、The feeder loss is the same for the MS and the BTS.  D、The antenna gain is the same for the MS and the BTS.  E、The combiner loss is the same for the MS and the BTS.  

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第6题
[单选题] View the Exhibit for some of the parameter settings. You start a session and issue the following command: SQL>CREATE INDEX emp_ename ON emp(ename) TABLESPACE users INVISIBLE; What is the outcome of the above command?（）

A、The index is not used by the optimizer but is maintained during DML operations.  B、The index is not used by the optimizer and is not maintained during DML operations.  C、The index is used by the optimizer only if a hint is specified in the query statement and is maintained during DML operations.  D、The index is used by the optimizer only if a hint is specified in the query statement but is not maintained during DML operations.  

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第7题
[单选题] In slow speed two-stroke engines,（）the fresh air entering begins when and stops as（）

A、the inlet port is opened by the up coming piston； the port is closed by the down going  B、the inlet valve is opened by the down going piston；the inlet valve is closed  C、the inlet port is opened by the down going piston；the port is closed by the up coming  D、the inlet valve is opened  

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第8题
[单选题] Which of the following is true of an ACL when a packet matching an ACE is found?（）

A、The matching ACE is skipped to allow all other ACEs to be examined.  B、The matching ACE is processed and then the last ACE is examined.  C、The matching ACE is processed and then the next ACE is examined.  D、The matching ACE is processed and the next packet is examined  

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第9题
[单选题] A user reports that the wireless network is slow and is able to see and access shared folders that are unknown to the user. Which of the following is the cause of the problem?（）

A、The SSID broadcast is disabled.  B、Wireless router is improperly configured.  C、The user is connecting to the wrong SSID  D、The wireless NIC is defective.  

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