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【单选题】
普通螺纹和梯形螺纹的牙型代号分别为()。A.
Tr、B
B.
M、Tr
C.
M、B
D.
φ、M
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举一反三
【单选题】He wants to read a book, ______ is most unusual for him.
A.
which
B.
that
C.
this
D.
what
【单选题】下列程序段的执行结果为 a=1 b=2 For I=1 To 3 f=a * b a=b b=f Print f Next I
A.
2 3 6
B.
2 4 8
C.
2 3 4
D.
2 2 8
【简答题】Henry is a little fatter than he wants to be.He wants to lose some weight （减轻重量）.He tries not to eat too much and he eats very little sugar because it will make him fat.He also does exercise every day...
【单选题】下列程序段的执行结果为 a=1 b=5 Do a=a+b b=b+l Loop While a<10 Print a；b
A.
1 5
B.
12 7
C.
a b
D.
10 25
【简答题】He' d like__________with you. He wants some help.
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