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【单选题】
支化程度可由单位体积内的（ ）或两个相邻支化点间的链段的平均分子量来描述。A.
交联点数
B.
链段数
C.
支化点数
D.
链节数
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反馈参考答案：
举一反三
【单选题】The maximum sea ice cover is about______.
A.
17,000 sq km
B.
170,000 sq km
C.
1,700,000 sq km
D.
17,000,000 sq km
【单选题】在短期内，随着产量的增加，平均固定成本会越变越小，于是平均成本曲线和平均可变成本曲线( )。
A.
两曲线最终会相交
B.
两曲线最终会合并成一条曲线
C.
两曲线的垂直距离会越来越小
D.
两曲线的垂直距离会越来越大
【单选题】In 1995 about 700,000 robots were operating in the industrialized world. Over 500,000 were used in Japan, about 120,000 in Western Europe, and about 2,000 in the United States. Many robot applications...
A.
robots can be used in many fields
B.
what jobs robots can do
C.
robots' activities
D.
human being's partner—robots
【单选题】In 1995 about 700,000 robots were operating in the industrialized world. Over 500,000 were used in Japan, about 120,000 in Western Europe, and about 2,000 in the United States. Many robot applications...
A.
robots can be used in many fields
B.
what jobs robots can do
C.
robots' activities
D.
human being's partner --robots
【单选题】东方表业公司生产的探路者防水手表即将投放市场,为争创名牌,开拓新路,准备在全国范围内征集广告语,该公司需要在报纸上刊登( )在社会上广泛告知。
A.
声明
B.
广告文案
C.
启事
D.
产品说明书
【单选题】In order to improve the security in the world, at no time ______ the first to use nuclear weapons.
A.
will China be
B.
China will be
C.
will be China
D.
be will China
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