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.已知时钟脉冲频率为100hz，欲得到频率为1hz的矩形波应采用（）进制计数器

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Modern editions of () and the Stanford-Binet Scale are the most widely used individually administered IQ tests in schools today.

A. SCL-90
B. the Wechsler scales
C. SAS
D. SES

The term () refers to internal processes that serve to activate, to guide, and to maintain our behavior.

A. emotion
B. intelligence
C. motivation
D. personality

Maslow refers to physiological, safety, and social needs as ().

A. deficiency needs
B. growth needs
C. self-actualization
D. self-fulfillment

() engage in sexual relations only with members of their own sex.

A. Bisexual people
B. Heterosexual people
C. Tom girls
D. Homosexual people