Shims of different thicknesses are inserted between the shells to enable adjustment of （）. ["the bearing clearances","the bearing thickness","the bearing strength","the bridge hardne"]
在装煤作业中，高压氨水压力突然降低时应立即切换高压氨水备用泵进行操作。
陆源碎屑沉积
It is not necessary to declare（）in MARITIME HEALTH DECLARATION. ["fever accompanied by prostration or persisting for several days","fever attended with glandular swelling","acute skin rash","glycosuria"]
在推焦困难的情况下，司机可以自行关闭炉门，并通知煤气班采取煤气措施。
机车综合无线通信设备（CIR）具有哪些特点？
