A.直动从动件盘形凸轮机构
B.曲柄滑块机构
C.齿轮齿条机构
D.摆动导杆六杆机构
E.螺旋机构
第4题
7.Let. Doesexists ?
A、(A) Yes, sincefor any, by pinching theorem,exists.
B、(B) Yes, sincefor any, by pinching theorem,exists.
C、(C) No, since there exists somesuch thatand somesuch that, we can't apply pinching theorem.
D、(D) None of above explanation is correct.
第8题
A、cat /etc/passwd|grep root>root.txt
B、grep root /etc/passwd>root.txt
C、grep root /etc/passwd 1>root.txt
D、cat /etc/passwd|grep "root">root.txt
第11题
第13题
A、chmod 700 /tmp/script??.sh
B、find /tmp -name "script??.sh" -exec chmod 700 {} \;
C、chmod 700 /tmp/script**.sh
D、chmod 700 /tmp/script[??].sh
E、chmod 700 /tmp/script[**].sh
F、find /tmp -name "script**.sh" -exec chmod 700 {} \;
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