【判断题】若函数f(x)在(a,b)内单调递增,且在(a,b)内可导,则必有f’(x)>0.
【单选题】According to the passage, which of the following statements is not true?
A.
Although it is easy to travel around the world now, real contact is impossible as a result of our inability to communicate.
B.
To overcome the language barrier, people all over the world welcome one of the major languages to be universal.
C.
People are afraid of losing their own languages as a result of the domination of major foreign languages.
D.
There are numerous misunderstandings in people's contacts.
【多选题】患者男,20岁,大学生,因“打篮球时突然跌倒在地、口吐白沫、面色发绀、一过性意识丧失伴尿失禁3h”由同学急呼120送入院。120医师给予吸氧、镇静处理。头痛,全身乏力,无恶心、呕吐。既往无类似发作。查体:T36.5℃,P80次/min,R20次/min,BP130/70mmHg;意识清楚;消瘦;左侧枕部一3cm×4cm皮下血肿;四肢肌力、肌张力均正常。脑电图:异常。颅脑CT:未见出血。患者对该病不...
【单选题】患者,男性,27岁,今早不慎被车撞倒,头部受到创伤,意识丧失,20分钟醒,自觉头痛、头晕,对受伤当时的情况没有记忆,你认为该患者最有可能发生了()
【单选题】Please read the following paragaraph, and find out How the writer develops the paragraph? The internet has been offering a tremendous assistance to its users in terms of communication. To start with, ...
A.
with comparison and contrast
B.
with a combination of examples, comparison and contrast and cause-and-effect pattern
D.
with cause-and-effect pattern
【判断题】若函数在 f (x) 在 ( a, b ) 内具有二阶导数,且 f’(x)0 , 则曲线 y= f( x ) 在 ( a, b) 内单调减少且是向上凹.
【简答题】短文填词。 In the past hundred years, there have been frequent natural disasters, ______ as floods, droughts, earthquakes. The disasters have killed m______ of people, destroyed countless homes, and wiped ...
【单选题】男性患者,25岁,头部受伤,意识丧失,25分钟醒。对伤前近时事情不能记忆,仍有头痛,未查出神经系统的阳性体征,应诊断为
【单选题】若f(x)在(a,b)内满足f’(x)0,则曲线y=f(x)在(a,b)内是().
【单选题】若a,b是方程f(x)=0的两个相异的实根,f(x)在[a,b]上连续,且在(a,b)内可导,则方程f’(x)=0在(a,b)内().