—________ shirt do you want?
—The blue one. [ ]
A. How
B. Where
C. Which
D. How much
答案:C
番泻叶的显微特征是()
A.草酸钙针晶
B.草酸钙簇晶
C.草酸钙方晶
D.草酸钙砂晶
E.草酸钙棱晶
接收线圈与4KM电阻相连,载频2600HZ,钢轨短路电流235MA时,接收电压应为()MV。
A、10+15
B、50+15
C、75+15
D、100+15