INTERNET的主要功能（)

The survey shows that ______.

A．only 10.4% reported use the Internet to send and receive email

B．less than half of the people use the Internet for entertainment

C．all of the people reported like to play games on-line

D．most of the people reported read on-line news

m维欧氏空间E_m的子集是有界、闭、凸集。

A.IM

B.EM

C.AM

D.NM

肠内营养(enteral nutrition，EM)

A.EquipmentView

B.IPview

C.Softwareview

D.licenseview

A.Em负值过小，Na⁺通道失活

B.Em负值过大，Em-Et的距离增大

C.Et上移，Em-Et的距离增大

D.Em负值减小，Em-Et的距离减小

E.Et上移，膜屏障作用加大

A.最大值Em

B.较频率ω

C.初相位φ

D.周期T

下面程序的输出是【 】。 main() {enum em{em1=3，em2=l,em3}； char*aa[]={"AA"，"BB"，"CC"，"DD"}； printf("%s%s\n",aa[eml],aa[em2],aa[em3])； }

下面程序的输出是【 】 main() {enum em{eml=3,em2=1,em3}; char*aa[]={"AA,"BB","CC","DD"} printf("%s%s%\n",aa[em1],aa[em2],aa[em3])； }