高速公路管理处、公司根据桥梁技术状况和批准的养护计划及时安排（）（或应急资金）处治桥

—He, together with his parents _______ going to visit Shanghai in July. How about you?

—I'm afraid I have to stay at home _______.

A. are; on my own

B. is; by myself

C. is; by my own

D. are; on myself

动脉粥样硬化的药物治疗包括（）

A.抗血小板药物

B.抗凝药物

C.扩张血管药物

D.调整血脂药物

E.溶血栓药物

导游人员按职业性质分为几类

在Solaris系统中，系统管理命令vmstat的用途是（）