题目内容
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[主观题]
Walter Gilbert纯化了乳糖阻抑物,发现其具有两个不同的结合位点,分别是______及______。
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Walter Mitty is ______.
A.a successful ad man
B.a short-story writer
C.a beginning piano player
D.a fictional character
A.Baidu
B.Microsoft
C.AT&T's Bell Labs
D.Yahoo
A.粒料表面的相互滑动摩擦
B.嵌挤作用产生的阻力
C.因粒料重新排列而受到的阻力
D.因剪切时体积膨胀而需克服的阻力
Which of the following statements is NOT true?
A.Lawn tennis became popular very rapidly in the United States.
B.It was Major Walter Wingfield who invented court tennis.
C.The sport was called "lawn tennis" shortly after it was invented.
D.Miss Outerbridge set up a lawn tennis court with the help of her brother.