高危妊娠的产科处理措施中正确的是（） A.持续给产妇吸氧，以增加胎儿氧供 B.预

甲、乙两名溜冰运动员，M_甲=80kg，M_乙=40kg，面对面拉着弹簧秤做圆周运动的溜冰表演，如图所示，两人相距0.9m，弹簧秤的示数为9.2N，下列判断中正确的是（　　）

A．两人的线速度相同，约为40m/s

B．两人的角速度相同，为6rad/s

C．两人的运动半径相同，都是0.45m

D．两人的运动半径不同，甲为0.3m，乙为0.6m

—The bag is very          . Can you help me carry it?

—Sure. [ ]

A. small            

B. new              

C. heavy

Melissa and Love Letter made use of the trust that exists between friends or colleagues. Imagine receiving an (26) from a friend who asks you to open it. This is what happens with Melissa and several other similar email (27) . Upon running, such worms usually proceed to send themselves out to email addresses from the victim’s address book, previous emails, web pages (28) .
As administrators seek to block dangerous email attachments through the recognition of well-known (29) , virus writers use other extensions to circumvent such protection. Executable (.exe) files are renamed to .bat and .cmd plus a whole list of other extensions and will still run and successfully infect target users.
Frequently, hackers try to penetrate networks by sending an attachment that looks like a flash movie, which while displaying some cute animation, simultaneously runs commands in the background to steal your passwords and give the (30) access to your network.

A．attachment

B．packet

C．datagram

D．message,

患者男，58岁，因“突发言语不能2h”来诊。2h前突发言语不利，表达困难，能理解，逐渐加重，伴右侧肢体无力。有高血压病史。查体：BP145/85mmHg；心律齐；意识清楚，言语不利，表达困难，仅能表达“我是…，我叫…”，理解可，查体合作；右侧鼻唇沟浅，伸舌右偏，右侧肢体肌力Ⅲ级，右侧病理征阳性，右侧肢体痛觉减退。

关于患者的治疗，叙述正确的是（）

A.无论梗死面积大小，必须尽快给予甘露醇脱水降低颅内压

B.发病时间短于6h，颅脑CT排除脑出血，无论CT是否显示梗死灶，都应立即予溶栓治疗

C.颅脑CT提示左侧额叶低密度影，如果不溶栓治疗，应立即予抗血小板治疗

D.颅脑CT提示左侧额叶低密度影，如果不溶栓治疗，应立即予华法林抗凝治疗

E.颅脑CT提示左侧额叶低密度影，建议患者绝对卧床

钢梯的扶手及扶手壁厚标准？