病历摘要:
处方:
影响滴丸丸重的因素有()
A.温度
B.湿度
C.滴距
D.滴管的口径
E.梯度冷却
F.适宜基质
参考答案:A, C, D, F
现有下列物质:①铁 ②清新的空气 ③液氧 ④锰酸钾 ⑤糖水 ⑥硫燃烧后的生成物 ⑦冰水共存物 (填写编号)
(1)属于混合物的有:______
(2)属于单质的有:______
(3)属于化合物的有______
(4)属于氧化物的有______(错一个得0分,漏一个扣0.5分)
If it is impossible to avoid a hurricane in the Northern Hemisphere,the most favorable place to be when the storm passes is in().
A.the dangerous semicircle
B.the eye (center) of the storm
C.that half of the storm lying to the right of the storm's path
D.that half of the storm lying to the left of the storm's path