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【单选题】
In the long run, new firms will enter a perfectly competitive market when firms in the market are _______.A.
making zero economic profit
B.
increasing output in order to maximize profit
C.
incurring economic losses
D.
making positive economic profits
E.
shutting down temporarily to reduce their economic losses
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举一反三
【单选题】有如下代码,分割出$path_parts的不包含扩展名的文件名使用的语句是: $path = $_SERVER['PHP_SELF']; $path_parts = pathinfo($path);
A.
$path_parts['dirname']
B.
$path_parts['basename']
C.
$path_parts['extension']
D.
$path_parts['filename']
【单选题】The critical path in a network is the path that:
A.
Has the greatest degree of risk.
B.
Will elongate the project if the activities on this path take longer than anticipated.
C.
Must be completed before all other paths.
D.
All of the above.
E.
A and B only.
【单选题】Most Palestinians are ______a path of peace, which means they reject a path of violence. [ ]
A.
at the mercy of
B.
in favor of
C.
in terms of
D.
owing to
【单选题】● The critical path in a schedule network is the path that:
A.
Takes the longest time to complete
B.
Must be done before any other tasks
C.
Allows some flexibility in scheduling a start time.
D.
Is not affected by schedule slippage
E.
All of the above.
【单选题】Given the following LSP configuration, which statement is true?（）label-switched-path lsp-xyz { to 10.200.1.1; primary path1; secondary path2; secondary path3; no-cspf; } path path1 { 10.200.10.1 stric...
A.
The router will use path1 when it is available and stable.
B.
The router will use path3 when it is available and stable.
C.
The router will attempt to establish path2 only when path1 and path3 are down.
D.
The router will attempt to establish path1 only when path2 and path3 are down.
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