对双绕组变压器进行测定短路损耗时,短路损耗等于变压器所吸收的()
A.铁损
B.有功功率及无功率
C.有功功率
D.无功功率
参考答案:C
选择括号内恰当的单词填入空白处,使句意完整、正确。
小题1:I meet Jim (on / in)my way home.
小题2:Let’s go (fish / fishing).
小题3:There are six (knife / knives)in the bag.
小题4:My grandparents are old. My father (have to / has to)live with them.
小题5:— (Whose / Who’s)the girl in white?
—She is my friend.
γ射线辐照红细胞常用的剂量为()。
A.5~10Gy
B.10~20Gy
C.15~20Gy
D.25~30Gy
E.50~70Gy