Sour crude oil（）. contains high quantities of hydrogen sulfide。 is diluted with other products for carriage。 is lighter than other crudes。 is less hazardous to load than other crude。
下列有关细胞凋亡的描述，错误的是：（） 细胞凋亡途经都是依赖于Caspases来切割底物蛋白的。 细胞凋亡过程中细胞内容物不会外泄。 细胞凋亡是主动地细胞死亡过程。 细胞凋亡途径是细胞信号网络组成的部分。
面对新形势、新任务、新要求，烟草行业要全面提升哪“五个形象”？
After a fire has been extinguished in a closed space, personnel may safely enter the space when （）. smoke density has been decreased sufficiently to see the bulkhead opposite the compartments entrance。 a lifeline and explosion proof flash light are used。 all smoke and toxic fumes are removed and an adequate oxygen supply is present。 overhaul has been completed to remove any possible source of re-ignitio。
根据涂装工艺，车间金属漆总膜厚要求控制在（）μm范围内。 45≤金属漆总膜厚≤65。 55≤金属漆总膜厚≤75。 90≤金属漆总膜厚≤110。 65≤金属漆总膜厚≤85。
涂装车间规定（）不准补漆。
