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【单选题】
All dogs are capable of doing harm to human beings.A.
damage
B.
injury
C.
danger
D.
wound
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举一反三
【简答题】设积分区域 ≤R^2，0≤z≤1，则三重积分 （ ）
【简答题】设积分区域G：x^2+y^2+z^2≤R^2，则三重积分 在柱面坐标下的累积分为 （ ）
【简答题】设积分区域B：x^2+y^2≤2x，则二重积分 （ ）
【单选题】The best kind of handshake is ______.
A.
very firm and quick
B.
light and show
C.
firm but gentle
D.
quick and slight
【简答题】A firm handshake is key to interview success. As any serious job-hunter knows, it helps to dress smartly and smile at that all-important interview. But research has showed that a firm handshake is wha...
【简答题】A firm handshake is the key to interview success. As any serious job-hunter knows, it helps to dress smartly and smile at that all-important interview. But research has showed that a firm handshake is...
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