The caterpillars (毛虫) _______ a wide range of trees, shrubs and plants. (A)eat on(B) raise on(C) live by(D) feed on
The caterpillars (毛虫) _______ a wide range of trees, shrubs and plants.
(A)eat on
(B) raise on
(C) live by
(D) feed on
相关考题:
Auserhaschangedtheirpasswordusingthepasswdcommand,andnoticesthatthechangeisonlymadetothelocalnode.Whentheadministratorchangestheuser’spasswordfromthecommandlineusingthepasswdcommandthechangeismadecluster-wide.Whatisthemostlikelycauseofthisproblem?()A.TheuserhasaUIDlessthan200B.TheuserhasbeendefinedasanadministrativeuserC.Thefile/usr/es/sbin/cluster/clpasswdisnotexecutablebytheuserD.Theuserneedsexplicitauthorizationtochangetheirpasswordcluster-wide
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要查看stats包中的数据集trees的某一列数据,比如仅查看Girth列的命令是A.trees$GirthB.trees[Girth]C.trees(Girth)D.trees.Girth