Cargo transfer operations on a tank vessel need NOT be stopped when ______.
A. a tug comes alongside while the tanker is loading grade D and E cargoes
B. a large,fresh oil spill is discovered immediately adjacent to the side of the tanker
C. there is an electrical storm in the vicinity
D. there is a fire on the dock or on a nearby vessel
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关于巨幼细胞贫血的叙述,下列正确的是
A. 可出现异食癖、反甲等临床表现
B. 粒细胞出现巨型杆状棱和核分叶过多现象
C. 可见细胞浆发育落后于细胞核现象
D. 小细胞低色素性贫血
E. 骨髓象主要表现为粒细胞系的巨幼变
油漆中的颜料可分为______三类。
A. 红色、黄色、蓝色
B. 红色、防锈、体质
C. 着色、防锈、防水
D. 着色、防锈、体质
红药水用于皮肤、粘膜伤口的消毒,它不能与______同用。
A. 碘酒
B. 紫药水
C. 酒精
D. 双氧水