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【单选题】
V带传动中,若主动轮的圆周速度为ν 1 ,从动带轮的圆周速度为ν 2 ,带的线速度为ν,则三者之间有__ __关系。A.
ν 1 =ν 2 =ν
B.
ν 1 >ν=ν 2
C.
ν 1 =ν>ν 2
D.
ν 1 >ν>ν 2
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【判断题】《世界创新竞争力发展报告(2011~2017)》黄皮书显示,2015年,美国、德国、法国位列世界创新竞争力排名的前三甲,中国在世界排名第10位,这是唯一一个能够进入世界创新排行榜前10名的发展中国家。
A.
正确
B.
错误
【单选题】How did the speaker feel when she heard the news?
A.
She was satisfied.
B.
She was annoyed.
C.
She was astonished.
D.
She was relieved.
【单选题】The girl was astonished because______.
A.
she thought he was a contemporary artist
B.
artists have their own theories
C.
he was not talking as she thought a painter should
D.
he was behaving very badly
【简答题】语法填空练习七 1._______ neither she nor her husband smoked, Mrs. Trench was surprised to see cigarette ash on her doorstep as she entered the house. When she opened the living-room door, she was astonished ...
【简答题】语法填空练习七 1. _______ neither she nor her husband smoked, Mrs. Trench was surprised to see cigarette ash on her doorstep as she entered the house. When she opened the living-room door, she was astonished...
【单选题】When I heard the news that she was going to resign, I was surprised. I was astonished.
A.
more than
B.
l ess than
C.
other than
D.
rather than
【单选题】Mary was astonished that she ______ for the counselor's position,
A.
turned on
B.
was turned down
C.
turned off
D.
was turned back
【判断题】《世界创新竞争力发展报告（2011～2017）》黄皮书显示，2015年，美国、德国、法国位列世界创新竞争力排名的前三甲，中国在世界排名第10位，这是唯一一个能够进入世界创新排行榜前10名的发展中国家。
A.
正确
B.
错误
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