5.87dm3=______L=______ml 5平方米4平方分米=_____

题型:填空题

问题:

5.87dm3=______L=______ml

5平方米4平方分米=______平方米

8.2kg=______g.

考点:体积,容积及单位间的互换
题型:填空题
选修4-4:坐标系与参数方程
已知曲线C的极坐标方程是ρ=2,以极点为原点,极轴为x轴的正半轴建立平面直角 坐标系,直线l的参数方程为
x=2-
1
2
t
y=1+
3
2
t
(t为参数).
(I)写出直线l与曲线C的直角坐标系下的方程;
(II)设曲线C经过伸缩变换
x′=x
y′=2y
得到曲线C'设曲线C'上任一点为M(x,y),求
3
x+
1
2
y
的取值范围.
题型:填空题

换流站内,()高压直流系统直流场中性区域设备、站内临时接地极、接地极线路及接地极均应视为带电体。

A.运行中

B.检修中

C.安装中

题型:填空题
如表,从左到右在每个小格子中都填入一个整数,使得其中任意三个相邻格子中所填整数之和都相等,则第2012个格子中的数为(  )
2abc-31
A.2B.-3C.0D.1
题型:填空题

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.

Why does the groundwater from the north finds its way into the canyon, but the water from the south doesn’t

A.Because there are fractures in the rocks in the south.

B.Because the southwest part of the underlying rock beds are a bit lower than those in the opposite direction.

C.Because the pressure of the upper streams forces the water to flow in from the north and flow away from the south.

D.The reason is not mentioned in the passage.

题型:填空题

电阻串联后总阻值等于各个电阻值()。

A.之差

B.之和

C.之积

D.之商

更多题库