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[主观题]

It has a number of applications, ____________ may be mentioned its use in flash lamp

A. among which

B. which

C. and which

D. each of which

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更多“It has a number of application…”相关的问题

第1题

The number of juveniles in the general population has fallen （） a fifth in the past 10 years.

A.by

B.in

C.to

D.for

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第2题

A．Check your number and call again.B．Tell the operator what has happened.C．Ask the ope

A．Check your number and call again.

B．Tell the operator what has happened.

C．Ask the operator to put you through.

D．Ask the operator what has happened.

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第3题

There has been a collision（）a number of cars on the main road to town. A．composi

There has been a collision（）a number of cars on the main road to town.

A．composing

B．consisting

C．involving

D．engaging

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第4题

Facebook account that the number of users on Monday （August 24) has reached 10 billion

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第5题

In MIMO，which factor has the greatest influence on data rates？（)

A.The size of the antenna

B.The height of the antenna

C.The number of transmit antennas

D.The number of receive antennas

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第6题

It has also shown that, in manufacturing, most parts（)a number of different machining

A.require

B.has

C.requires

D.have

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第7题

A number of their products ________ put on exhibition.

A.has been

B.is

C.have been

D.are

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第8题

A great number of colleges and factories（)since 1949.

A.has been establish

B.have been established

C.have established

D.had been established

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第9题

To study a number of subjects in the humanities has been both enjoyable and _______ ,

providing me with a new and different perspective on the world in which we live.

A、enlightened

B、enlightening

C、protested

D、protesting

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第10题

A linear programming model has been formulated for two products, X and Y. The objective fu

nction is depicted by the formula C = 5X + 6Y, where C = contribution, X = the number of product X to be produced and Y = the number of product Y to be produced. Each unit of X uses 2 kg of material Z and each unit of Y uses 3 kg of material Z. The standard cost of material Z is $2 per kg. The shadow price for material Z has been worked out and found to be $2·80 per kg. If an extra 20 kg of material Z becomes available at $2 per kg, what will the maximum increase in contribution be？

A.Increase of $96

B.Increase of $56

C.Increase of $16

D.No change

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