The unit "hertz" is equivalent to （）

相似题目

• The pressure head of a pump is given in the unit of （）.

  A . kg B . MPa C . meter fluid column D . None of the above is true

  查看最佳答案

• The unit of electrical resistance is the （）

  A . ampere B . volt C . watt D . ohm

  查看最佳答案

• The full title of the U.K. is the United Kingdom of （）and （）

  查看最佳答案

• Among the five Great Lakes, only （）is wholly within the United States.

  A . Erie B . Superior C . Michiga

  查看最佳答案

• The output voltage of a 440 volt, 60 hertz, AC generator is controlled by the （）.

  A . prime mover speed B . exciter output voltage C . load on the alternator D . number of pole

  查看最佳答案

• The President of the United States is elected（）

  A、 indirectly by the electors B、 by Congress C、directly by the voters D、None of the above.

  查看最佳答案

• The smallest meaningful unit of language is allomorph.

  A . 正确 B . 错误

  查看最佳答案

• The capital city of the United States is ________.

  查看最佳答案

• What is one of the purposes of pets in the United States?

  查看最佳答案

• Great Britain is synonymous with the United Kindom

  查看最佳答案

• Goy Company has a break-even point of 88,000 units. The contribution margin per unit is $9.60. The desired target profit is $18,096. How many units must be sold to achieve the desired profit?

  查看最佳答案

• Grossprofit margin is the sales price minus the variable cost per unit.

  查看最佳答案

• The Supreme Court is the highest court in the United States. ( )

  查看最佳答案

• In the United States, ______is the fastest growing fuel.

  A．natural gas B．coal C．oil D．hydropower

  查看最佳答案

• In the United States, the Senate is presided over by______of the United States.

  A．the president B．the vice president C．the speaker D．the Secretary of State

  查看最佳答案

• The President of the United States is head of the branch of

  A．legislative. B．executive. C．judicial. D．party.

  查看最佳答案

• The national bird of the United States is______.

  A．sparrow B．swallow C．eagle D．swan

  查看最佳答案

• The head of govemment of United Kingdom is

  A. the Prime Minister． B. the Speaker of the House of Lords． C. the Speaker of the House of Commons． D. the Queen．

  查看最佳答案

• Which of the following is NOT true of the United States？

  A．It has been a leader in the global economy. B．It's hard for the United States to keep the original economic position forever. C．The United States owns others a lot of money. D．Its economy will grow more than any other country in the world over next two years. 此题为多项选择题。

  查看最佳答案

• Chair Co has developed a new type of luxury car seat. The estimated labour time for the first unit is 12 hours but a learning curve of 75% is expected to apply for the first eight units produced. The cost of labour is $15 per hour. The cost of materials and other variable overheads is expected to total $230 per unit.

  Chair Co plans on pricing the seat by adding a 50% mark-up to the total variable cost per seat, with the labour cost being based on the incremental time taken to produce the 8th unit. Required: (a) Calculate the price which Chair Co expects to charge for the new seat. Note: The learning index for a 75% learning curve is –0·415. (5 marks) (b) The first phase of production has now been completed for the new car seat. The first unit actually took 12·5 hours to make and the total time for the first eight units was 34·3 hours, at which point the learning effect came to an end. Chair Co are planning on adjusting the price to reflect the actual time it took to complete the 8th unit. Required: (i) Calculate the actual rate of learning and state whether this means that the labour force actually learnt more quickly or less quickly than expected. (3 marks) (ii) Briefly explain whether the adjusted price charged by Chair Co will be higher or lower than the price you calculated in part (a) above. You are NOT required to calculate the adjusted price. (2 marks)

  查看最佳答案

• Though the Unites States is a ____ country, it should obey the rules made by the United Nations. (power)

  查看最佳答案

• Why is the United States called "a nation on the wheels"（）

  A．Because Americans love making cars B．Because Americans depend much on cars in their daily life C．Because Americans constantly move from city to city in their cars D．Because the car industry has earned the United States its reputation

  查看最佳答案

• Soccer is now the（）sport in the united states.

  A．wide-spreading B．fastest-growing C．fast-apprearing D．fast-growing

  查看最佳答案

• “We try harder” is the advertising slogan of Hertz, a long-time rival of Avis（）

  是 否

  查看最佳答案