题目内容

What was the weather like in most of North and South

A. It was cold.
B. It was wet.
C. It was dry.

查看答案

搜索结果不匹配？点我反馈

更多问题

汽车以80km/h的时速行驶，其迎风面积A=2m²，阻力系数C_D=0.4，空气的密度ρ=1.25kg/m³，试求汽车克服空气阻力所消耗的功率。

如图所示为一闸下出流，渠道底坡i=0，宽度b=5m，下泄的单宽流量q=7.0m³/(s·m)，闸后水流收缩断面的水深用下式计算
式中：h_c为收缩断面水深；φ为流速系数，取为0.95；H为闸前水深。已知H=5.0m，下游水深h_t=3.12m，试求：(1) 判别闸下发生水跃的类型。(2) 求水跃的长度。(3)求水跃的水头损失。(4)求水跃的消能率和消能功率。

We all went to the park, _______ we enjoyed ourselves very much.

A. or
But
C. And

患儿，18个月。腹泻时轻时重，已经3 个月，大便清稀无臭。夹不消化食物，有时便后脱肛，形寒肢冷，面色挠白，精神萎靡，睡时露睛，舌淡苔白，指纹色淡。治疗应首选

A. 异功散合平胃散
B. 附子理中汤合四神丸
C. 保和丸合二陈汤
D. 金匮肾气丸合人参乌梅汤
E. 参苓白术散合理中丸