问题 单项选择题

某建造于大城市市区的28层公寓,采用钢筋混凝土剪力墙结构体系。平面为矩形,共6个开间,横向剪力墙间距为8.lm,其中间剪力墙的计算简图如题图所示。

混凝土强度等级采用C30,纵向钢筋采用HRB335钢,箍筋采用HPB235钢。as=as′=35mm。

工程所在场地的地基土的构成如下表所示:

若有抗震要求时,须确定其建筑场地类别。以下()项场地类别是正确的。

A.Ⅰ

B.Ⅱ

C.Ⅲ

D.Ⅳ

答案

参考答案:B

解析:

根据《震规》4.1.4,取d0=18m

查表4.1.6知,场地类别应为Ⅱ类,故选B

单项选择题 A1/A2型题
单项选择题

The International Whaling Commission’s (IWC) decision to retain its ban on whaling does not mean that the killings will stop. Quite the (1) .

Save the Whale. It’s a phrase which became annoying with (2) , an unfavorable shorthand for liberal consciences. How appalling, then, that in the year 2010, it should be pressed (3) service again, to fight the whaling nations: Norway and Iceland, who exempted themselves from the 1986 prohibition (4) by the IWC, and Japan, which hunts whales under cover of " (5) research".

I am completely (6) by this week’s events in Morocco, where talks broke down. In my heart, I agree with those who have (7) the news that this year’s negotiations of the IWC have broken up, and (8) the prohibition would not be lifted (as the US proposed in a desperate (9) to break the deadlock). Yet reason (10) something else. If we do not (11) some kind of new control, the (12) will be able to go on with their slaughter (13) . Membership of the IWC is (14) , and the ban was only ever intended to be (15) . Japan, which has been buying the votes of nations with no interest in whaling (only in the 16 Japan offers in turn), will continue to press its case, having invested millions of dollars in its (17) . Geoffrey Palmer, New Zealand’s Commissioner at the IWC, has proposed a year-long (18) period. In the meantime, more whales will die.

We stand at a crossroad for whales. We see the (19) existence of these animals as an indicator of ecological threat. As symbols of an endangered world, they evoke, and provoke, a feeling that they have the same qualities as human on a scale equal to their size and supposed (20) . To some this is so much sentimental words in the New Age.

1()

A.condition

B.situation

C.reverse

D.contrast