压缩空气经空冷塔后,空气中的水分含量能否增加,为什么?
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Traffic separation schemes established by the International Maritime Organization().
A. provide routing and scheduling procedures to reduce shipping delays
B. provide traffic patterns in congested areas,so that vessels can operate without having a separate lookout
C. provide inbound and outbound lanes to promote the safe flow of vessel traffic
D. prohibit vessels carrying hazardous cargoes from entering waters that are environmentally sensitive
当定位基准不利于保证测量精度或不便于测量操作时,可选择合适的()为测量基准。
A. 点
B. 线
C. 面
D. 点、线、面
一个管理者能够有效领导的直接下属的人数就是()
A. 管理层次
B. 扁平结构
C. 垂直结构
D. 管理幅度
下列哪些水果蔬菜不宜放在冰箱冷藏室中存放:()
A. 苹果
B. 香蕉
C. 荔枝
D. 芒果
E. 木瓜
F. 柠檬