变电所在()可以进行交接班。
A.事故处理中
B.倒闸操作中
C.正常运行时
参考答案:C
____ we is known to all, English is not very difficult to learn.
A.What
B.As
C.That
D.Which
五个月健康男婴,因母亲有慢性病,给以人工喂养,喂以牛奶。
5个月健康男婴,给以牛奶人工喂养,体重为6kg,每天需要总热量应为多少千焦耳()
A.1881(450kcal/D.
B.2090(500kcal/D.
C.2299(550kcal/D.
D.2508(600kcal/D.
E.2759(660kcal/D.