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【判断题】
“有问有答”就是导游讲解时,导游员向旅游者提出的问题或启发他们提问题的导游技巧。
A.
正确
B.
错误
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举一反三
【单选题】细胞内外液体中正常的 Na + 和 K + 浓度差的形成和维持是由于
A.
膜在安静时对 K + 通透性大
B.
膜在兴奋时对 Na + 通透性增加
C.
K + 、 Na + 易化扩散的结果
D.
膜上 Na + - K + 泵的作用
查看完整题目与答案
【多选题】Examine the command： SQL> ALTER USER skd ACCOUNT LOCK； Which two statements are true after the command is executed（）
A.
The SKD user cannot log in to the database instance.
B.
The objects owned by the SKD user are not accessible to any user.
C.
The other users can access the objects owned by the SKD user， on which they have access.
D.
The password for the SKD user expires and the user is forced to change the password at the next log in
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【多选题】You executed the following command to drop a user: DROP USER scott CASCADE; Which two statements regarding the above command are correct?（）
A.
All the objects of scott are moved to the Recycle Bin.
B.
Any objects in the Recycle Bin belonging to scott are purged.
C.
All the objects owned by scott are permanently dropped from the database.
D.
All the objects of scott in the Recycle Bin must be purged before executing the DROP command.
E.
Any objects in the Recycle Bin belonging to scott will not be affected by the above DROP command.
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【单选题】Which of the following are true regarding the command output shown in the display? (Choose two.)
A.
There are at least two routers participating in the RIP process.
B.
A ping to 192.168.168.2 will be successful.
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【单选题】两电阻串联接在电源电压12V的电路中,已知流过他们的电流是2A,则电路的总电阻是()。
A.
12
B.
2
C.
6
D.
24
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【单选题】Which two options are features of the extended ping command? (Choose two.)
A.
哪两个选项是扩展ping命令的特征？
B.
It can send a specific number of packet
C.
以发送特定数量的数据包
D.
It can send packet from specified interface of IP address
E.
以从IP地址的指定接口发送数据包
F.
It can resolve the destination host name
G.
以解析目标主机名
H.
It can ping multiple host at the same time
I.
以同时ping多个主机
J.
it can count the number of hops to the remote host. K. 以计算到达远程主机的跳数。
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【多选题】Which two options are features of the extended ping command? (Choose two.)
A.
It can send a specific number of packet
B.
It can send packet from specified interface of IP address
C.
It can resolve the destination host name
D.
It can ping multiple host at the same time
E.
it can count the number of hops to the remote host.
查看完整题目与答案
【单选题】发电机的额定电压一般高于同级电网电压多少
A.
2.50%
B.
5%
C.
10%
D.
5% 或10%
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【多选题】Which two statements or sets of statements are true about the application of the qos pre-classify command？（）
A.
If the classification policy is based upon the ToS byte， the qos pre-classify command is required because the ToS byte only appears in the inner IP header.
B.
The ToS byte is copied to the outer header by default. Therefore， the qos pre-classify command is not necessary.
C.
With GRE encapsulation， the qos pre-classify command is applied on the tunnel interface. This practice allows for different OoS configurations on each tunnel.
D.
With GRE encapsulation， the qos pre-classify command is applied on the physical interface. This practice allows for different OoS configurations on each interface.
E.
With IPsec encapsulation， the qos pre-classify command is applied on the physical interface. This practice allows for different OoS configurations on each interface.
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【多选题】Which two statements about extended traceroute command are true?(choose two)
A.
it can send packets from a specified interface or ip address
B.
it can use a specified TTL value
C.
it can validate the reply data
D.
it can use a specificed TOS
E.
it can repeated automatically to a specified interval
查看完整题目与答案
相关题目：
【单选题】细胞内外液体中正常的 Na + 和 K + 浓度差的形成和维持是由于
A.
膜在安静时对 K + 通透性大
B.
膜在兴奋时对 Na + 通透性增加
C.
K + 、 Na + 易化扩散的结果
D.
膜上 Na + - K + 泵的作用
查看完整题目与答案
【多选题】Examine the command： SQL> ALTER USER skd ACCOUNT LOCK； Which two statements are true after the command is executed（）
A.
The SKD user cannot log in to the database instance.
B.
The objects owned by the SKD user are not accessible to any user.
C.
The other users can access the objects owned by the SKD user， on which they have access.
D.
The password for the SKD user expires and the user is forced to change the password at the next log in
查看完整题目与答案
【多选题】You executed the following command to drop a user: DROP USER scott CASCADE; Which two statements regarding the above command are correct?（）
A.
All the objects of scott are moved to the Recycle Bin.
B.
Any objects in the Recycle Bin belonging to scott are purged.
C.
All the objects owned by scott are permanently dropped from the database.
D.
All the objects of scott in the Recycle Bin must be purged before executing the DROP command.
E.
Any objects in the Recycle Bin belonging to scott will not be affected by the above DROP command.
查看完整题目与答案
【单选题】Which of the following are true regarding the command output shown in the display? (Choose two.)
A.
There are at least two routers participating in the RIP process.
B.
A ping to 192.168.168.2 will be successful.
查看完整题目与答案
【单选题】两电阻串联接在电源电压12V的电路中,已知流过他们的电流是2A,则电路的总电阻是()。
A.
12
B.
2
C.
6
D.
24
查看完整题目与答案
【单选题】Which two options are features of the extended ping command? (Choose two.)
A.
哪两个选项是扩展ping命令的特征？
B.
It can send a specific number of packet
C.
以发送特定数量的数据包
D.
It can send packet from specified interface of IP address
E.
以从IP地址的指定接口发送数据包
F.
It can resolve the destination host name
G.
以解析目标主机名
H.
It can ping multiple host at the same time
I.
以同时ping多个主机
J.
it can count the number of hops to the remote host. K. 以计算到达远程主机的跳数。
查看完整题目与答案
【多选题】Which two options are features of the extended ping command? (Choose two.)
A.
It can send a specific number of packet
B.
It can send packet from specified interface of IP address
C.
It can resolve the destination host name
D.
It can ping multiple host at the same time
E.
it can count the number of hops to the remote host.
查看完整题目与答案
【单选题】发电机的额定电压一般高于同级电网电压多少
A.
2.50%
B.
5%
C.
10%
D.
5% 或10%
查看完整题目与答案
【多选题】Which two statements or sets of statements are true about the application of the qos pre-classify command？（）
A.
If the classification policy is based upon the ToS byte， the qos pre-classify command is required because the ToS byte only appears in the inner IP header.
B.
The ToS byte is copied to the outer header by default. Therefore， the qos pre-classify command is not necessary.
C.
With GRE encapsulation， the qos pre-classify command is applied on the tunnel interface. This practice allows for different OoS configurations on each tunnel.
D.
With GRE encapsulation， the qos pre-classify command is applied on the physical interface. This practice allows for different OoS configurations on each interface.
E.
With IPsec encapsulation， the qos pre-classify command is applied on the physical interface. This practice allows for different OoS configurations on each interface.
查看完整题目与答案
【多选题】Which two statements about extended traceroute command are true?(choose two)
A.
it can send packets from a specified interface or ip address
B.
it can use a specified TTL value
C.
it can validate the reply data
D.
it can use a specificed TOS
E.
it can repeated automatically to a specified interval
查看完整题目与答案