题目内容

Today I can’t drive my car to the office, because my car ____ in the garage.

A. is being repaired
B. is repaired
C. will be repaired
D. was repairing

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The palace caught fire three times in the last century, and little of the original building ____ now.

A. remains
B. is remained
C. is remaining
D. has been remained

_________是起重机的旋转中心与取物装置铅垂线之间的距离。

A. 起重高度
B. 变幅幅度
C. 起重范围
D. 起重幅度

卷扬机的固定方法有（）。

A. 压重锚固法
B. 立桩锚固法
C. 螺栓锚固法
D. 水平锚固法

桁架就位的关键点是使桁架的端头两个方向的轴线与柱顶轴线重合后，及时进行临时固定。

A. 对
B. 错