一个高30厘米的圆锥容器，盛满水倒入和它等底等高的圆柱体容器内_爱下问搜题

搜题请搜索小程序“爱下问搜题”

问题选择题

一个高30厘米的圆锥容器，盛满水倒入和它等底等高的圆柱体容器内，容器口到水面距离是（　　）

A．20厘米

B．15厘米

C．30厘米

D．90厘米

答案

因为，等底等高的圆柱的体积是圆锥体积的3倍，

所以，在等底等体积时，圆柱的高是圆锥的高的

1

3

，

圆柱体容器内水的高度是：30×

1

3

=10（厘米），

容器口到水面的距离是：30-10=20（厘米），

答：容器口到水面的距离是20厘米．

故选：A．

多项选择题

ST_Lenovo
EMCVNX5300远程保护软件-SPW包含下面的哪些软件（）.

A.Replicator

B.RecoverPoint/SE CRR

C.MirrorView

D.Snapshot

填空题

Part 4

Questions 26-45

·Read the following passage and choose the best word for each space.
·For questions 26-45, mark one letter A, B, C or D on the Answer Sheet.
Do you want to send an e-mail message to the White House
Good luck.
In the past, (26) President Bush — or at least those assigned to read his mail — what was (27) your mind it was necessary only to sit down at a personal computer connected to the lnternet and (28) a note to president@ whitehouse.gov.
But this week, Tom Matzzie, an online organizer with the A.F.L.-C.I.O., discovered that (29) with the White House had become a bit more (30) . When Mr. Matzzie sent an e-mail protesting (31) a Bush administration policy, the message was bounced back With an automated reply, saying he had to send it again in a new way.
Under a system (32) on the White House Website (33) the first time last week, those who want to send a message to President Bush must now (34) as many as nine Web pages and (35) a detailed form that starts by asking whether the message sender supports White House policy (36) differs with it.
The white House says the new e-mail system is an effort to be more responsive (37) the public and offer the administration "real time" access (38) citizen comments.
Completing a message to the president also requires (39) a subject from the provided list, then entering a full name, organization, address and e-mail address. (40) the message is sent, the writer must wait for an automated response (41) his message, (42) whether the addressee intended to send the message. The message is delivered to the White House only after the person using that e-mail address (43) it.
"Over (44) , it’s a very cumbersome process," said Jakob Nielsen, an authority on Web design. "It’s probably designed deliberately to (45) on their e-mail.\

A．As

B．When

C．While

D．Once