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【单选题】
终止一个前台进程可能用到的命令和操作是() 。
A.
exit
B.
+C
C.
shut down
D.
halt
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【单选题】配位滴定中使用的指示剂是
A.
吸附指示剂
B.
金属指示剂
C.
.自身指示剂
D.
酸碱指示剂
【单选题】.配位滴定中使用的指示剂
A.
吸附指示剂
B.
金属指示剂
C.
.自身指示剂
D.
酸碱指示剂
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