【单选题】用水平力F把物体压在竖直墙壁上静止不动。设物体受墙的压力为 F1,摩擦力为F2, 则当水平力F增大时,下列说法中正确的是( )
【单选题】Which of the following is RIGHT?
A.
In the early 19th century, the first trains began to carry passenger.
B.
Dinosaurs lived on Earth more than 60 millions years before human beings.
C.
The king ordered his men to collect a bag of rice.
D.
There are many tiny computers around us, and we dependent on them nearly every day.
【单选题】患者,女,48岁。半年来面目、下肢时有浮肿。气色晦滞,身重乏力,大便溏泄,喜暖畏寒,脉沉细,舌淡苔白。治疗应取哪组穴最佳( )。
【单选题】听力原文:M: German wine? No, I'm Sorry, Madam. We haven't any German wine. We have some Italian wine. W: All right. So, a bottle of Italian wine, one fish, one steak, two salads. Q: Where did this convers...
【单选题】Which one of the following is not part of Apple's successful story?
A.
To introduce Apple One, an early personal computer.
B.
To introduce a graphical user interface which became very popular later.
C.
To lower the prices of Apple computers by large margin to increase consumer loyalty.
D.
To introduce iPod music player which sells well worldwide.
【单选题】In mild winters apple buds began to break soon after Christmas, leaving them ______ to frost damage.
【单选题】听力原文:M: German wine? No, I'm sorry, Madam. We haven't any German wine. We have some Italian wine. W: All right. So, a bottle of Italian wine, one fish, one steak, two salads. Q: Where did this convers...
【简答题】一家企业因为内部主机数量过多,因此申请了多个公网 IP 地址用于 PAT 转换。在出口路由器配置 PAT 时,工程师使用了地址池的方式。但工程师认为,由于这些地址只存放在地址池中,并没有配置在路由器的外网接口上,因此从互联网返回的 IP 流量将会因为目的地不可达而被运营商的路由器丢弃。于是,他使用了 secondary 地址的方式,将地址池中的所有 IP 地址配置在了外网接口上。对于该工程师的操作...