生产性粉尘根据其性质可以分为（)、（)、（)，其中炸药属于 （)。A．无机性粉尘；有机性粉尘；二次扬尘；有机

A．accept stimuli

B．transmit impulses

C．nutrition

D．protect

A．postulates that peripheral neurons do not respond to a greater extent to stimuli representing a single taste quality

B．ignores the crucial difference between central and peripheral gustatory neurons in their role as mechanisms of taste

C．implies that the activity of any individual taste cell, taken by itself, is ambiguous

D．fails to acknowledge that specific gustatory neurons are associated with particular tastes

E．relies primarily upon research data that has come from human, rather than animal, subjects

A．postulates that peripheral neurons do not respond to a greater extent to stimuli representing a single taste quality

B．ignores the crucial difference between central and peripheral gustatory neurons in their role as mechanisms of taste

C．implies that the activity of any individual taste cell, taken by itself, is ambiguous

D．fails to acknowledge that specific gustatory neurons are associated with particular tastes

E．relies primarily upon research data that has come from human, rather than animal, subjects

A．postulates that peripheral neurons do not respond to a greater extent to stimuli representing a single taste quality

B．ignores the crucial difference between central and peripheral gustatory neurons in their role as mechanisms of taste

C．implies that the activity of any individual taste cell, taken by itself, is ambiguous

D．fails to acknowledge that specific gustatory neurons are associated with particular tastes

E．relies primarily upon research data that has come from human, rather than animal, subjects

A．postulates that peripheral neurons do not respond to a greater extent to stimuli representing a single taste quality

B．ignores the crucial difference between central and peripheral gustatory neurons in their role as mechanisms of taste

C．implies that the activity of any individual taste cell, taken by itself, is ambiguous

D．fails to acknowledge that specific gustatory neurons are associated with particular tastes

E．relies primarily upon research data that has come from human, rather than animal, subjects

The central bank may conduct defensive open market purchases to offset the effect of

A．a decrease in reserve requirements

B．an increase in currency in circulation

C．an increase in discount rate

D．all of the above

From the passage we know that the nerve impulses in human beings ______.

A．are lack of differentiation in quality

B．are similar in size, number, and arrangements

C．reveal qualitative diversity

D．spasmodically pass through the nervous system

It can be inferred from the third paragraph that______.

A．four-fifths of conduct disorder is caused by nurture

B．one-fifth of conduct disorder is caused by nurture

C．one-fifth of conduct disorder is caused by nature

D．four-fifths of conduct disorder is caused by nature

A．different modes of sensation might be correlated with the discharge of specific kinds of nervous energy

B．nerve cell units conduct essentially homogeneous impulses through homogeneous cerebral tissue

C．the mental experiences produced by sensory nerve impulses are determined by the cortical area activated

D．quality of the impulse or its conduction was influenced by the different modes of sensation