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【多选题】
字符串是一种用来表示文本的数据类型,它是由符号或者数值组成的一个连续序列。 Python支持使用单引号、双引号和三引号定义字符串。其中单引号和双引号通常用于定义单行字符串,三引号通常用于定义多行字符串。 问题:定义字符串的符号有( )A.
单引号'
B.
双引号”
C.
三引号'''
D.
三引号"""
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【单选题】In this example, assume that both trade and production factors are internationally mobile. Using domestic labor, the labor cost per silicon chip is $.10 in Japan and $.20 in the United States. Using d...
A.
those made in Japan with Japanese labor and capital
B.
those made in the United States with U.S. labor and capital
C.
those made in Japan with Japanese labor and U.S. capital
D.
those made in the United States with Japanese labor and U.S. capital
【单选题】The United States Environmental Protection Agency reports that about 53,000 people die as a result of breathing in secondhand smoke in the world /in the United States each year.
A.
in the world
B.
in the United States
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