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Cet-6-1.6-Exercise 02Innovation, the elixir of progress, has always cost people their jobs. In the Industrial Revolution hand weavers were ______ aside by the mechanical loom. Over the past 30 years the digital revolution has displaced many of the mid-skill jobs that supported 20th-century middle-class life. Typists, ticket agents, bank tellers and many production-line jobs have been dispensed with, just as the weavers were.

A. swept
B. controlled
C. benefits

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若(a,c)=1,(b,c)=1则(ab,c)=()。

A. b
B. c
C. a
D. 1

对于任意a∈Z,若p为素数,那么(p,a)等于()。

A. 1或p
B. p
C. 1,a,pa
D. 1

所有大于1的素数所具有的公因数的个数都是相等的。()

A. 对
B. 错

做药物过敏试验时由医师开具某种药物皮试医嘱,其后标注一个括号,由( )将皮试结果填入括号内。

A. 核对护士
B. 白班护士
C. 夜班护士
D. 执行护士
E. 主班护士

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