集选电梯在运行中应能顺向截车，并能响应最远端的反向呼梯指令。()
参考答案：对
Lei Feng is always ready to help others when they are in trouble and he never _______ their request.
A．turns up
B．turns over
C．turns in
D．turns down
记忆是人脑对（）
A.客观事物的个别属性的反映
B.过去经验的反映
C.客观事物的超前反映
D.过去经历过的事物的反映
E.客观事物的概括的、间接的反映
