下列关于裱糊工程基层处理的做法正确的是（）。 ["新建筑物抹灰基层墙面在刮腻子前应涂刷抗碱封闭底漆","新建筑物的混凝土在刮腻子前应涂刷界面剂","旧混凝土墙面在裱糊前应涂抗碱封闭底漆","木材基层的含水率不得大于8%"]
Which of the following must be running on a node for the clstat utility to work properly？（） [" clinfo"," clhosts"," clsmuxpd"," cltopinfo"]
一个软件解决方案提供商希望提供一个iSCSI解决方案，下面哪个产品能够适合这个需求？（） ["IBM TS7520 虚拟带库","IBM DS3400磁盘阵列","IBM SVC虚拟引擎和 DS4000磁盘阵列","IBM N系列产品"]
进口机器设备消费税的计税基数是设备的（）。 ["FOB+关税","FOB+关税+增值税","CIF+关税","CIF+关税+增值税"]
Which of the following statements about DS8000 hard drive technology is correct（） ["All types of the 2.5" disk drives offered by the DS8800 system have higher performance than the 3.5" disk drives supported by DS8700","The 2.5" disk drives included on the DS8800 support 6Gbps SAS； the 3.5" disk drives in DS8700 are 4 Gbps FC","The 2.5" disk drives included on the DS8800 support 8Gbps SAS； the 3.5" disk drives in DS8700 are 4 Gbps FC","The 2.5" 15k rpm drives offered by the DS8800 system support 6Gbps SAS-2"]
简述反渗透膜污垢产生的因素。
