食品毒理学研究的内容包括哪些？
An administrator needs to add the /usr/vac/bin directory to their PATH environment variable for the current session. Which of the following will accomplish this task（） ["path=$path：\/usr\/vac\/bin； export path","path.=\/usr\/vac\/bin； export $path","Modify the path environment variable in \/etc\/profile","Modify the path environment variable in \/.profile"]
污染物的类比分析法，判断分析对象与类比对象之间的相似性，可以从（）等方面入手。 ["工程一般特征的相似性","污染物排放特征的相似性","项目生产方式相似性","环境特征相似性","项目区域地貌相似性"]
An administrator is defining an lpp_source calledlpp_AIX6 in NIM when the following warning message is displayed in the output:warning: 0042-267 c_mk_lpp_source: The defined lpp_source does not have the 'simages' attribute because one or more of the following packages are missing: Bos bos.net bos.diag bos.sysmgtbos.terminfo bos.terminfo.all.data bos.mp64 devices.common bos.64bit. What does this warning message mean?（） ["The lpp_AIX6 is not a valid lpp_source NIM resource.","The lpp_AIX6 can be used in NIM BOS operations to install AIX only on standalone clients.","The lpp_AIX6 can be used in NIM CUST operations to install software on SPOTs and running machines.","The lpp_AIX6 does not contain all of the required software packages for NIM CUST installation operations.WArialCourier NewTimes New RomanZ"]
公称工作压力等于或大于8兆帕的气瓶是（）气瓶 ["高压","低压","中压"]
常见的竞争型肌松药是（）。
