【单选题】
(36726)活塞自下止点向上止点移动，进、排气门均关闭，进入汽缸内的空气被压缩，构成___。(1.0分)
A. 高温高压
B. 压缩冲程
C. 做功行程
D. 压缩终了
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答案
B
解析
暂无解析
相关试题
【单选题】
(36735)___应设钢筋混凝土套箍后压浆。(1.0分)
A. 圬工裂纹宽大于0.3mm
B. 裂纹宽大于0.15mm，深入圬工内部，但已稳定
C. 墩台有断裂贯通的裂缝
D. 圬工裂纹宽大于0.15mm小于0.3mm
【单选题】
(36762)检查桥枕是否失效的方法之一，是用直径12～6mm木钻墩实样，___是好木枕的状态。(1.0分)
A. 木屑硬而成片
B. 木屑松散成片
C. 木屑呈粉状
D. 木屑呈粒状
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