日计时误差的化整间距为()。
A、1s
B、0.05s
C、0.02s
D、都不对
参考答案:D
根据首字母提示及短文内容,在空白处填入一个恰当的词。
I have (有) a good friend. She is from (1) C______. (2) H______ name is Candy. She is (3) e______
years old. Her (4) p______ number is (010) 9874-4532. We aren't in the (5) s______ class. But we are good
friends.
降水观测场地查勘范围,拟设站地点2~3()。
A.dm2
B.cm2
C.m2
D.km2