更多"A steady flame in a gas burner is t"的相关试题:
[单项选择]A steady flame in a gas range is the result of ______.
A. a burning velocity equal to the combustion wave
B. fuel being supplied at the same rate as the combustion wave
C. fuel being supplied at a higher rate than that of burning velocity
D. a free flowing supply of air from the openings in the head of the burner
[单项选择]The gas-oil contact or gas-water contact_____ the lower limit of producible gas.
A. is
B. are
C. were
D. has been
[单项选择]The Bunsen burner is so named because it is thought ______ by Robert Bunsen, who was German by birth.
A. having been invented
B. to be invented
C. to have been invented
D. being invented
[单项选择]Steady advances in digital memory technology are making mass-storage devices technologically______ and increasingly cost-effective.
A. eligible
B. sustainable
C. probable
D. feasible
[单项选择]Warm-blooded animals maintain a steady temperature by ______.
A. storing heat in their body cells
B. regulating the amount of heat produced
C. regulating the amount of heat given off
D. constantly replacing lost surface heart
[单项选择]Who had gas-masks
A. Everybody.
B. A part of the protestors.
C. Policemen.
D. Both a and C.
[单项选择]Hold the torch steady so I can see better.
A. continuous
B. quick
C. firm
D. exceptional
[单项选择]Today's low inflation and steady growth in household income ______into more purchasing power.
A. translates
B. transfers
C. transplants
D. transmits
[单项选择]The steady rise in the quality of our products owes much to the improvements of the management．
A. 产品质量的平稳上升在很多方面取决于管理水平的改进。
B. 我们产品的质量提高在很大程度上是因为管理水平的改进。
C. 我们产品的质量稳步提高了，但在管理水平方面亏欠很多。
D. 我们产品质量的稳步提高在很大程度上是由于管理水平的改进。
[单项选择]The study also notes a steady decline in the number of college students taking science courses.
A. relative
B. general
C. continuous
D. sharp
[单项选择]The view that the yield of rice remains steady is by no means -------,owing to the fact that yearly tempests overflowing Asia influence it in ------- manner.
A. (A) uncertain ... a capricious
B. (B) uncontested ... a predictable
C. (C) unrealistic ... a catastrophic
D. (D) convincing ... a redundant
E. (E) infallible ... an erratic
