Bags are usually stowed in between the bulk grain（）.
A. to ventilate the hold
B. to separate the cargo
C. to replace shifting boards
D. to facilitate stowage
A dirty diesel engine oil filter element can best be detected by （）.
A. visual inspection of the elements
B. the pressure drop across the filter
C. high lube oil sump temperature
D. decrease in oil viscosity from the filter
患者男，28岁。O型血，患再生障碍性贫血半年，血红蛋白70g/L，白细胞2.2×109/L，血小板20×109/L。该患者早晨刷牙时发现出血，应立即给予的措施是（）。
A. 严密观察病情
B. 无需输注血小板制剂
C. 立即输注血小板制剂
D. 根据患者的具体情况决定是否需要输注血小板制剂
E. 应用止血药物
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