下列各种材料中都属于绝缘体的一组是:[ ] A.石蜡、橡胶、陶瓷、空气 B.胶木

题型:选择题

问题:

下列各种材料中都属于绝缘体的一组是:[ ]

A.石蜡、橡胶、陶瓷、空气

B.胶木、塑料、陈醋、人体

C.橡胶、木棒、大地、铜

D.自来水、铁、棉纱、柴油

考点:导体,绝缘体
题型:选择题

以下做法中有利于解决漫画所反映问题的是(   )

A.消除行业收入差别

B.改革完善分配制度,进行公平分配

C.强化市场的基础性调节作用

D.关闭垄断企业

题型:选择题

男性,42岁,发热、咳嗽、咳痰并活动时气促、面部及手部红斑,红斑逐渐向胸部、腰和膝关节部扩展

确诊的主要方法是()

A.肌肉的理化检查

B.特异抗体检查

C.神经系统检查

D.激素检查

E.X线检查

题型:选择题

驾车时使用安全带属于健康促进行为中的()

A.日常健康行为

B.预警行为

C.保健行为

D.避开环境危害行为

E.以上都不正确

题型:选择题

预制轴心受压桩,其桩身强度为其截面面积与混凝土轴心抗压强度设计值之积,再乘以折减系数ψc,ψc取下列哪一数值是正确的

A.1.0
B.0.95
C.0.85
D.0.75

题型:选择题

Keith, CFA, has been invited to join a group of analysts in touring the riverboats of A & K Limited. Since commercial flight schedules are inconvenient and not practical for the group’s time schedule, A & K Limited has arranged chartered flights from casino to its location. A & K Limited has also arranged to pay the hotel bill for the three nights of the tour. The trip is purely business. According to AIMR Standards of Professional Conduct, Keith should:()

A. as the arrangements are inappropriate, decline to accept the trip.

B. offer to pay for his share of the airfare and his own hotel bill.

C. accept the flight, but pay his own hotel bill.

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