溶解氧（dissolved oxygen DO）
溶解氧（dissolved oxygen DO）
相关考题：
The passage implies that medicine in an osmotic pump pill will leave the pill when ______.A．the pill is swallowedB．the medicine is dissolved with water from the bodyC．enough pressure builds up in the pillD．the cellulose coating is dissolved
When anaerobic bacteria convert the sewage to an inert sludge, .A.no oxygen is neededB.oxygen is necessaryC.oxygen is given offD.no gas is produced
Deficient oxygen content inside a chain locker can be detected with ______.A.litmus paperB.a combustible gas indicatorC.an oxygen breathing apparatusD.an oxygen indicator
单选题According to the passage, why couldn’t PET and functional M. R. I. scans detect subtle changes in blood flow earlier?ABecause there is early oxygen transfer.BBecause they do not form their images quickly enough to follow such rapid changes.CBecause researchers control the changes in blood flow.DBecause early oxygen transfer gives the flow blood energy.
单选题Deficient oxygen content inside a chain locker can be detected with（）.Alitmus paperBa combustible gas indicatorCan oxygen breathing apparatusDan oxygen indicator
单选题The abbreviation "TDS" about the potable water probably means （）.Atotal dissolved solidsBtemperature of distillation of sea waterCtotal dissolved sodiumDtotal delivery system
单选题The concentration of total dissolved solids in the water of an auxiliary boiler can increase as a result of （）.Aseawater contaminationBfrequent surface blowsCdissolved oxygen deaerationDfrequent bottom blows