挖土机械应距高压线有一定安全距离，距电缆（）m处，严禁机械开挖。
A．1.5
B．2
C．1
D．3
参考答案：C
写出正确的答语。
1. Can a cow fly?
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2. What can fly?
3. Can you jump?
4. Can a mouse skip with a skipping rope?
5. Can you ride a bicycle?
6. Can a rabbit run?
7. What can run?
平面法兰
