The ___ of oxygen in the air rises, and at last the air becomes breathableA. numberB. dealC. amountD. mount

The ___ of oxygen in the air rises, and at last the air becomes breathableA. numberB. dealC. amountD. mount Serious lack of oxygen in the cabbages什么意思 英语翻译The Method2.1 Biochemical Oxygen Demand (BOD)The biochemical oxygen demand (BOD) of waste water,industrial effluents and surfacewater is an expression for the amount of oxygen consumed by the decomposition oforganic matter in a biochemica Evaluation and correlation of vapor-liquid equilibria in the ternary system nitrogen-argon-oxygen Don't stay in the air-conditioned room too long_____lack of oxygen.A.because of B.in case of C.in spite of D.since the amount of substance of oxygen atoms is 英语文章大意Like cells anywhere else in your body,active neurons use oxygen.Blood brings oxygen to the neurons,and the more active a neuron is,the more oxygen it will consume.The more active a region of the brain,the more active its neurons,and Tea ___ in the south of China. One litter of air at atmospheric pressure and 25C is held in a flask.the pressure of oxygen in the flask is 0.201 atm(20.4kpa).the concentration of oxygen in the flask ,in mole per litter is A 8.2 B 0.12 C0.098 D0.0082 请问选哪个 然后为什么 1.The plants can ___ carbon dioxide into oxygen.选项:a、changeb、 turnc、 convertd、 become2.As I ___ this all-emcompassing beauty,I thought of Emerson’s comments about the stars.选项:a、marveledb、 marveled atc、 was marveledd、 was ma Shanghai lies in the east of China.近义句Shanghai ___ ___ in the east of China. there are____colous in the logo of beijing olympic,they are___,___,___,___,___,and___.意思 英语翻译The slowness of decomposition of humic substances is a factor in the decomposition lag and oxygen accumulation in an ecosystem that has been stressed.In general appearance,humus is a dark,often yellow-brown,amorphous or colloidal substanc 英语翻译Kinetics of acid-oxygen leaching of low-sulfur Ni-Cu matte at atmospheric pressure A study of the leaching of low-sulfur Ni-Cu matte in acid-oxygen (CuSO4-H2so4-O2)solution at atmospheric pressure was described in present work .This matte 英语翻译K inetics of acid-oxygen leaching of low-sulfur Ni-Cu matte at atmospheric pressure A study of the leaching of low-sulfur Ni-Cu matte in acid-oxygen (CuSO4-H2so4-O2)solution at atmospheric pressure was described in present work .This matt My mum ___ ___ ___ when she saw the flowers in front of the door There are a lot ___ birds ___ the treeA.of ; on B.of ; in C. / ; in 提问一道英语题目.To prevent iron knives from rusting ,we can keep them away from oxygen and water by ___( ) A. wrapping them in paper B. putting oil on the surfaces C. putting them in plastic bags 并且翻译