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【单选题】
bash命令的（ ）选项使Shell在执行程序过程中，把执行的每一个命令在行首用一个“+”号加上对应的命令显示在终端上，并把每一个变量和该变量的值也显示出来。A.
-x
B.
-v
C.
-m
D.
-n
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举一反三
【单选题】We’re trying to ring you back, Bryan, but we th
A.
8. We’re trying to ring you back, Bryan, but we thinkwe ________ your number incorrectly. （浙江） A. looked up
B.
took down
C.
worked out
D.
broughtabout
【单选题】May 8th 200 _ Dear Mr. Steele, We are writing in reply to your letter of April 5th, in which you asked for our advice concerning the marketing of motor-cycles in the western part of your country. At t...
A.
complaint.
B.
advice.
C.
application.
D.
request.
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