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【单选题】
种子植物可分为被子植物和裸子植物。下列不属于裸子植物的是( )。
A.
杉树
B.
松树
C.
核桃树
D.
银杏树
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【判断题】三相异步电动机星—三角启动后的启动电流和启动转矩都减少至直接启动的1/3。
A.
正确
B.
错误
【单选题】听力原文:W:You are so concentrated on your book that you even can't hear me come into your room. M:Are you talking to me? The music in my earphone is so loud. Q:What can be inferred from this conversation...
A.
The man is focusing on reading books.
B.
The man likes reading books.
C.
The man pretends not hearing the woman.
D.
The man is listening to the music.
【判断题】三相异步电动机星-三角启动后的启动电流和起动转矩都减小至直接启动的1/3。
A.
正确
B.
错误
【简答题】附点是表示延长原音符时值的 。
【单选题】Your book is not so old as _________.
A.
him
B.
he
C.
his
【单选题】The book is borrowed from the library, so you ______ your children put dots and lines here and there.
A.
should have left
B.
ought not to have let
C.
needn't have let
D.
mustn't have let
【简答题】Where does your food come from? How is it made? These days, many people worry about food safety. But food safety is not a new worry. In 1906, Upton Sinclair wrote the Jungle. The book is the story of ...
【单选题】附点表示延长原音符时值的:
A.
1/4
B.
1/2
C.
1/3
D.
1/8
【判断题】三相异步电动机星-三角启动后的启动电流和起动转矩都减小至直接启动的1/3。
A.
正确
B.
错误
【单选题】附点表示延长原音符的()?
A.
一倍
B.
一半
C.
两倍
D.
三倍
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