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【单选题】
已知等比数列{a n }的公比q＜0，其前n项和为S n ，则a 9 S 8 与a 8 S 9 的大小关系是（ ）A.
a 9 S 8 ＞a 8 S 9
B.
a 9 S 8 ＜a 8 S 9
C.
a 9 S 8 =a 8 S 9
D.
a 9 S 8 与a 8 S 9 的大小关系与a 1 的值有关
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【单选题】——It will be terrible to see the nuclear war happen. ——That’s right. Nuclear science should be developed to benefit the people _____ harm them.
A.
more than
B.
rather than
C.
other than
D.
better than
【简答题】普通螺纹的公称直径指的是螺纹的__,计算螺纹的摩擦力矩时使用的是螺纹的__,计算螺纹危险截面时使用的是螺纹的__。
【简答题】Nuclear science be developed to benefit the people ________ harm them. A) more than B) other than C) rather than D) better than
【简答题】用所给词的适当形式填空。 1. Kangaroos are (play) and chimpanzees are (noise). 2. I was (surprise) to find hardly anyone in the zoo. 3. Visiting zoos are like (live) textbooks for young people. 4. He (use) to be (...
【单选题】To my surprise, it turned out that I was wrong.
A.
switch (a light or heater) off
B.
be present at an event; appear
C.
happen in a particular way, or have a particular result, especially one that you did not expect
D.
force sb to leave a place
E.
produce or make sth
F.
empty sth completely by taking out the contents
【简答题】I was (surprise)__________, but at the same time very happy.
【单选题】Our point is that nuclear science should be developed to benefit people ______ harm them.
A.
more than
B.
other than
C.
rather than
D.
better than
【简答题】普通螺纹的公称直径指的是螺纹的 ( )径,计算螺纹的摩擦力矩时使用的是螺纹的 径,计算螺纹危险截面时使用的是螺纹的 径。
【简答题】普通螺纹的公称直径指的是螺纹的 大径,计算螺纹的摩擦力矩时使用的是螺纹的 ,计算螺纹危险截面时使用的是螺纹的 。
【简答题】普通螺纹的公称直径指的是螺纹的 径,计算螺纹的摩擦力矩时使用的是螺纹的 径,计算螺纹的危险截面时使用的是螺纹的 径。
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