室外消防给水管网应布置成环状，仉在建筑初期或消防用水量不超过()时可布臂成枝状。
A．5L／s
B．10L／s
C．15L／s
D．20L／s
参考答案：C
阅读短文，根据首字母提示填入正确的单词。
The Spring Festival is the Chinese New Year's Day. It usually comes in (1) F______. Everyone in China
(2) l______ the Spring Festival. When the Spring Festival comes, Li Lei usually (3) h______ his parents clean
their (4) h______ and do some shopping and other housework. On that day everyone in China (5) e______
jiaozi, New Year's cakes and some other delicious food. Li Lei likes New Year's cakes, but Lanlan says jiaozi
is nicer than New Year's cakes. The (6) C______ people eat the New Year's cakes and jiaozi in their houses.
How (7) h______ they are!
判断调查方法的优劣？
