（）是指实现企业全部或主要贸易活动的电子化。 A.电子商务 B.网络营销 C.ERP

各级政府对同级公安机关的领导，是通过行政命令保证党的路线、方针、政策、重大决策的切实贯彻实施。 ( )

I was addressing and stamping envelops (信封) when I found there were no stamps left. "I have some in here," my daughter said as she reached for her Bible (圣经).
"It just shows that if you need help, turn to the Bible." I said.
"I also keep my household money (家用钱) in here," she replied. "It’s a good place to hide things. The ones who do open the Bible wouldn’t steal from it, and the ones who would steal never open it.\

She also kept her stamps in it.

A. Right.


B. Wrong.

C. Doesn’t say.

在某个时间内能检查的整个人群样本中，某病现有感染者人数所占的比例，称为（）。

A.感染率

B.续发率

C.引入率

D.死亡率

E.累积死亡率

如图，在绕地运行的天宫一号实验舱中，宇航员王亚平将支架固定在桌面上，摆轴末端用细绳连接一小球．拉直细绳并给小球一个垂直细绳的初速度，它做圆周运动．在a、b两点时，设小球动能分别为E_ka、E_kb，细绳拉力大小分别为T_a、T_b，阻力不计，则（　　）

A．E_ka＞E_kb

B．E_ka=E_kb

C．T_a＞T_b

D．T_a=T_b

鉴别腹股沟斜疝与直疝最有价值的临床特点是

A．疝块的形状

B．疝块的位置

C．回纳疝块后压住深(内)环，增加腹压是否脱出

D．是否容易嵌顿

E．发生年龄