问题 填空题

密度计是用来测量液体密度的仪器,测量时漂浮在被测液体中,如图,用同一支密度计分别测量甲、乙两种液体的密度,两种液体的密度p_____p.(均选填“>”“=”或“<”)

   

答案

<

因密度计在两种液体中都处于漂浮状态,故由物体的浮沉条件可知:密度计在两种液体中所受浮力均等于重力,即F=F,因密度计在甲液体中浸入液体的体积大于在乙液体中时浸入体积,则由浮力公式F=ρgV可得,ρ<ρ

故答案为:<.

选择题
单项选择题

Turkey’s Bodrum peninsula is different. The tourist boom in this part of the world (1) turned some small villages into resorts yet left neighbouring beaches undisturbed, making it quite (2) southern France or the Spanish Coasts where few stretches of coastline are undevelopeD.
The (3) for this happy set of circumstances is simple. For thousands of years, travel here (4) easier by boat than by lanD.So when mass tourism arrived in the (5) 1980s, there was no coast road for ribbon development to follow. So the peninsula, just (6) hour from Bodrum airport, has not become one long littoral of resort.
The building (7) new hotels has mainly been confined to places easily reached by then relatively (8) roads. Such ease of access has made Gumbet, near Bodrum, a busy resort, while the little fishing village of Gumusluk, 12 miles further west and only recently reachable by (9) , remains tranquil and undisturbeD.
It’s worth thinking carefully about location when planning a family (10) on the peninsulA.Choose a place that is centrally located, preferably out of earshot (11) Bodrum town’s "lively"—which means nosy—nightlife, and you can then use (12) area’s comfortably small scale to your advantage. Today’s new roads mean most places can (13) reached in under an hour by taxi or the ubiquitous dolmus-minibus.
The (14) of facilities at the Tamarisk Beach Hotel near the small village of Ortakent makes (15) a good base. The family-run hotel—rooms and suites are in two-storey buildings (16) by palm trees and flowers in terracotta pots—sits above its own sandy (17) beach, shaded by tamarisk trees and sheltered by nearby islands.
The hotel is (18) child-friendly, too. Children, from infants up to young teenagers, can take part in a (19) of games and activities that include tuition in windsurfing, dinghy (20) catamaran sailing.

What are the five basic components that the Tourism Enriches campaign features

A.the slogan of the campaign; the graphic image; six pages of paper; advertisements; a thirty minute video program

B.its slogan; the graphic image or logo; a published book outlining positive impacts of tourism; national television channels; satellite TV

C.its slogan; the graphic image or logo of the campaign; a six-page flyer; a poster; a video announcement

D.the slogan of the campaign; the graphic image or logo; an A4 size advertisement; video announcement; airlines