云南省在禁毒斗争中总结出的“四禁”指的是
①禁吸 ②禁服 ③禁种 ④禁贩运 ⑤禁注射 ⑥禁制造
A.①②③⑤
B.①③⑤⑥
C.①②④⑥
D.①③④⑥
答案:D
Bill was the telephone.
A.considered inventing
B.considered to have discovered
C.considering having invented
D.considered to have invented
放出20%以上额定容量,密封蓄电池组应进行充电。