矿渣棉是以工业废料矿渣为原料，将矿渣熔化，用蒸汽喷射法或离心法制成絮状的保温材料。关

如图所示为A、B两个简谐运动的位移-时间图象。请根据图象写出这两个简谐运动的位移随时间变化的关系式：________________________________；________________________________。

—Your coat looks very nice. What's it made _______?

—Cotton, and it is made _______ Wuhan. [ ]

A. from; in

B. of; in

C. from; on

D. of; on

In the following essay, each blank has four choices. Choose the most suitable one from the four choices and write down in the answer sheet.
The key to SNMP (76) is its simplicity. It has a small command set that does a good job of collecting information from (77) any network device. In a SNMP environment, (78) of the work is handled by the network management system. Devices that are being managed are not (79) with processing (80) that might affect their performance.

A．many

B．almost

C．a lot of

D．nearly

男性，70岁，反复咳嗽、咳痰30年，活动后气短12年。动脉血气分析示PaCO₂50mmHg，PaO₂45mmHg，能够延长寿命，防止肺动脉高压发展的最有效的家庭治疗是（）.

A.抗生素控制感染

B.支气管舒张剂治疗

C.吸入糖皮质激素

D.呼吸机锻炼

E.长期家庭氧疗

对精神病学的认识正确的是

A．在古代医学中，不包含精神病学的内容

B．现代精神病学的发展有大约50年的历史

C．精神和躯体的相互关系是本学科研究的一个中心课题

D．精神病学与精神卫生学是两个相互独立的学科

E．不研究由器质性原因导致的精神障碍