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【判断题】
圆弧插补G02和G03的顺逆判别方向是：沿着垂直插补平面的坐标轴的负方向向正方向看去，顺时针方向为G02，逆时针方向为G03。A.
正确
B.
错误
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参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【简答题】投保单也称为( ),它是投保人向保险人表示要求进行保险意思的书面文件。
【单选题】We all went out _____ the lost boy, but after we had _____ everywhere, we didn't find him. [ ]
A.
searching for; searching
B.
searching; searched
C.
in search of; searched
D.
in search for; searching
【单选题】We didn’t know how to find them because they didn’t tell us _______.
A.
which room did they live
B.
which room they lived in
C.
which room they lived
D.
which room did they live in
【单选题】We didn’t have much difficulty _______ the company.
A.
found
B.
to find
C.
in finding
D.
find
【简答题】植物生长物质是调节植物生长发育微量的化学物质。它可分为两类: 和植物 。
【单选题】Which type of energy can NOT change to other types in humanbody?
A.
kinetic energy
B.
static energy
C.
electric energy
D.
heat energy
E.
mechanical energy
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