在Rt△ABC中,∠C=90°,a=3,c=5,求sinA和tanA的值.

题型:解答题

问题:

在Rt△ABC中,∠C=90°,a=3,c=5,求sinA和tanA的值.

考点:勾股定理锐角三角函数的定义
题型:解答题

___________(curious) drove Wang Peng inside. It was full ______people. The hostess, ____very thin lady, came forward. "Welcome," she said. "My name is Yong Hui. I'll help you lose weight and be fit in two weeks______you eat here every day." Then she gave a menu to Wang Peng. There were _______ choices of food and drink on it: just rice, raw vegetables served in vinegar, fruit and water. Wang Peng was ___________(amaze) at this and especially at the________. It cost more than a good meal in his restaurant! He could not believe his eyes. He threw down the menu and hurried outside. _______ his way home he thought about his own menu. Did it make people fat? Perhaps he should go to the library and find ______. He could not have Yong Hui _________ away with telling people lies! He had better do some research!

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疾病轮状模型的外环是指

A.环境

B.遗传因子

C.宿主

D.特异病原体

E.病原微生物

题型:解答题

公共支出中反映政府配置资源作用的是( )

A.政府补贴支出
B.政府采购支出
C.社会保障支出
D.国债利息支出

题型:解答题

下列选项中,糖类、蛋白质和脂肪的消化产物大部分吸收的部位()。

A.十二指肠,空肠及回肠

B.十二指肠

C.十二指肠和空肠

D.空肠及回肠

E.回肠

题型:解答题

可在氢氧化钠试液中与铅离子反应的是

A.硫喷妥钠
B.苯巴比妥
C.苯巴比妥钠
D.异戊巴比妥
E.司可巴比妥

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