【多选题】关于滤过机理的叙述正确的是
A.
筛析作用指固体粒子由于粒径大于滤材的孔径而被截留
C.
深层截留作用是指粒径小于滤过介质孔径的固体粒子进入到介质的深层被截留
【单选题】对于膜过滤下列叙述正确的是
A.
过滤介质可使用滤纸、滤布、纤维、多孔陶瓷、烧结金属等多种材料
B.
超滤由于具有冲刷膜表面的作用可完全消除浓差极化现象
C.
反渗透膜可透过无机离子因此工业中可用于海水淡化处理
【多选题】会计人员具体办理会计工作交接,其程序有( )。
【单选题】对于膜过滤下列叙述正确的是
B.
超滤由于具有冲刷膜表面的作用可完全消除浓差极化现象
C.
反渗透膜可透过无机离子因此工业中可用于海水淡化处理
D.
过滤介质可使用滤纸、滤布、纤维、多孔陶瓷、烧结金属等多种材料
【单选题】we wish to stress that shipment must be made within the prescribed time limit,as a further____will not be considered by our end-users.
【判断题】装配工艺规程的内容主要包括装配技术要求、检验方法及装配所需设备、工具时间定额等。
【单选题】We wish to stress that shipment must he madewithin the prescribed time limit,as a further __________will not he considered by our end-users.
【单选题】If you are suffering from high stress ______, or wish to ______ after a tiring day, it is generally advisable to have a change of scene.
【单选题】WE WISH TO STRESS THAT SHIPMENT MUST BE MADE WITHIN THE PRESCRIBED TIME LIMIT,AS A FURTHER____WILL NOT BECONSIDERED BY OUR END-USERS.