炸药
参考答案:
广义的说,炸药是能够发生爆炸反应,并具有爆炸三要素的物质。
在液体培养基中,底部絮状沉淀呈“钟乳石”状的是()
A.鼠疫耶尔森菌
B.小肠结肠炎耶尔森菌
C.肺炎克雷伯菌
D.普通变形杆菌
E.奇异变形杆菌
Madam Curie, ________life had once been very hard, was given two Nobel Prizes.[ ]
A. of whom
B. for whom
C. for whose
D. in whom