如果热水器用的多,让热水器一直保持通电比把一箱冷水烧到相同温度用电低。
参考答案:错
Please give me a piece of paper _____. [ ]
A. to write
B. to write on
C. to write with
D. to write down
瞳孔缩小可见于()
A.颅脑外伤
B.青风内障
C.颅内肿瘤
D.川乌中毒
E.杏仁中毒