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The foreign policy of a state is the result of a complex process in which the decision-makers of the state:

Convert the national interest(s) of the state into objectives to be pursued in other countries

Abolish the distinction between municipal, provincial, domestic, and foreign affairs

Copy the policies of neighbouring states to prevent the escalation of conflict

Delegate all decisions to international organisations such as the United Nations and the World Bank

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Suppose that installation of a new assembly line increases the output produced per worker. The cost per unit of output

is at its maximum.

is at its minimum

will be unchanged.

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What does variable cost divided by quantity produced equal?

None of the above.

average total cost

average variable cost

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When marginal cost is rising, what must happen to average variable cost?

It must be falling.

None of the above.

It must be constant.

It could be rising or falling.

It must be rising.

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lung

Match the descriptions with their correct terms

C is a

B is a

A is a

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The blood-air barrier:

lung

Consists of bronchial capillaries, basal laminas and type 1 alveolar cells

Occurs at the terminal bronchiolar epithelium

Consists of pulmonary vessels and type II alveolar epithelial cells

Consists of pulmonary capillary endothelium, fused basal laminas and type 1 alveolar cells

Occurs at the visceral pleura only, which is the deepest part of the conducting airway

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Which option is correct?

Thorax 2

Cartilage, muscle, vessels of lung develop from splanchnic mesoderm

Each lung is covered directly with parietal pleura except at the hilum

The embryonic lungs grow into a cavity called the pericardium

All respiratory passages are lined internally by a columnar epithelium

The lungs develop as primitive buds from the endoderm of midgut

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If the marginal rate of technical substitution of labour for capital is 6, the price of labour is $18, and the price of capital is $9, then the firm

should use more labour and less capital.

should use more capital and less labour.

can substitute one unit of capital for six units of labour and keep output unchanged.

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A sofa manufacturer currently is using 50 workers and 30 machines to produce 5,000 sofas a day. The wage rate is $200 and the rental rate for a machine is $1,000. At these input levels, another worker adds 200 sofas, while another machine adds 500 sofas. If the firm uses 45 workers and 31 machines instead, then its

cost will be unchanged, and its output will increase by 500 units.

output will be unchanged, and its cost will decrease by $800.

cost will be unchanged, and its output will decrease by 500 units.

none of the above

cost will be unchanged, and its output will increase by 300 units.

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A firm is using 500 units of labour and 100 units of capital to produce 100 units of output. Labour costs $5 per unit and capital $20 per unit. At these input levels, another unit of labour adds 50 units of output, while another unit of capital adds 400 units of output. The firm could increase output by

10 units by spending $1 more on capital and $1 less on labour.

350 units by spending $1 more on labour and $1 less on capital.

none of the above

350 units by spending $1 more on capital and $1 less on labour.

10 units by spending $1 more on labour and $1 less on capital.

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