△ABC中,a、b、c分别是∠A、∠B、∠C的对边,且a:b:c=3:4:5,那

题型:填空题

问题:

△ABC中,a、b、c分别是∠A、∠B、∠C的对边,且a:b:c=3:4:5,那么sinA=______,cosA=______,tanB=______.

考点:解直角三角形
题型:填空题

过滤式防毒面具的使用条件不正确的是()。

A、氧气体积浓度大于18%

B、氧气体积浓度小于10%

C、环境温度为-30~45℃

D、毒气浓度小于1%

题型:填空题

请根据字面提示与句意,用必修4Unit1-2中所学新词、短语或句型的适当形式补充句子。

小题1:Their _________ (behave) towards me shows that they do not like me.

小题2:He had been under _________ (观察) by the police before he was caught.

小题3:We’d better take time and money into _________ (consider) when making the plan.

小题4:We have been told to show r_________ for our elders.

小题5:_________ (inspire) by what the old man said, the boy decided to try again.

小题6:Look! There is a child _________ (挣扎) in the lake.

小题7: He made up his mind to r_________ himself of the bad habits.

小题8: The meeting last week was aimed at _________ (扩张) the company.

小题9:She r_________ her weight by 5 kilograms because she considered herself too fat.

小题10:The man, who is _________ (提到,涉及) to at the meeting, is my former classmate.

小题11:The scientist said that the rocks had changed in both _________ (chemistry) and physical ways.

小题12:The old man came in, with two young men _________ (支持,支撑) his body.

小题13:Whenever I come across computer problems, I will consult my uncle because he is a s_________ in that field.

小题14:More teaching _________ (设备) will be given to the school as a reward.

小题15:There were strong _________ (argue) for and against the new policy.

小题16:He felt a great sense of a_________ when he finally succeeded in entering that key university.

小题17:To my _________ (satisfy), he succeeded in finishing the work ahead of schedule.

小题18:90% of the products are _________ (出口) to Europe, which earns a lot of money for our country.

小题19:Researchers in this field have made several important new _________ (discover)

小题20:The girl is so gossip that she likes to make c_________ on others' clothes.

小题21:Now more than 60% of the rice produced in China each year _________ (be) from this hybrid strain.

小题22:Barbara is easy to recognize as she is the only one of the women who _________ (wear) evening dress.

小题23:Going to bed early and getting up early _________ (be) a good habit.

小题24:No one can avoid _________ (influence) by advertisements.

小题25: He attached great importance to _________ (build) up our country.

题型:填空题

为避免再次诱发蛛网下腔出血,给予病人的指导错误的是 ()

A.保持心情舒畅,避免情绪激动

B.咳嗽时应用力屏气后再用力咳出,以促进肺部痰液的咳出

C.指导病人采用放松技术,如听轻音乐、缓慢深呼吸、引导式想象性思维以避免紧张情绪

D.保持大便通畅

E.避免感冒

题型:填空题

下列情形中,属于劳动争议仲裁时效中断的是()。

A.当事人能够证明因不可抗力等客观原因无法申请仲裁 

B.一方当事人向对方当事人主张权利 

C.一方当事人向有关部门请求权利救济 

D.对方当事人同意履行义务 

E.限制民事行为能力劳动者的法定代理人尚未确定

题型:填空题

污水泵流量的设计依据是()。

A.管网的布置

B.管道的最大流量

C.所需提升的高度

D.旱流污水量

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