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【判断题】
需求测刺激是通过劳动力、土地、资本、创新四大农业生产要素的合理供给与有效利用，实现资源优化配置，推动经济发展。（ ）A.
正确
B.
错误
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皮皮学刷刷变学霸
举一反三
【单选题】Having checked the doors were closed, and ___ all the lights were off, the boy opened the door to his bedroom.
A.
why
B.
that
C.
when
D.
ours
【单选题】can be used to check the air leakage from the pip
A.
The lube oil
B.
The fuel oil
C.
The soap water
【单选题】静压轴承的工作原理是 ,再经过间隙流回油池。
A.
压力油经过一个节流器分别流入轴承的一个油腔
B.
压力油经过四个节流器分别流入轴承的四个油腔
C.
压力油经过一个节流器分别流入轴承的四个油腔
D.
压力油经过一个节流器分别流入轴承的两个油腔
【简答题】Having checked the doors were closed, and ___ all the lights were off, the boy opened the door to his bedroom. A．why B．that C．when D．ours1
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