下列对起重力矩限制器主要作用的叙述哪个是正确的?()
A.限制塔机回转半径
B.防止塔机超载
C.限制塔机起升速度
D.防止塔机出轨
参考答案:B
公司召开一个重要会议,小张又迟到了。公司王经理批评他说:“小张,你为什么又迟到啦?”小张解释说:“因为来晚了,所以迟到了。” 以下哪项陈述正确描述了上文推论中的错误?( )
A.使用了一种原则上既不能证明为真也不能证明为假的前提B.把对一类事物中的个别种类断定为真的结论推广到这类事物的所有种类C.使用了一种强词夺理的说法D.把所需要做出解释的现象本身作为对那种现象的一种解释
Renowned U. S. economist, John Rutledge, who helped frame the fiscal policies of two former U. S. presidents, warned that an abrupt rise in China’ s currency could lead to another Asian financial crisis. The founder of Rutledge Capital told the media that if the yuan rises (1) it would discourage foreign direct investment in China while (2) by market speculators. Currency change is more difficult for investors and (3) .The Chinese currency has appreciated by (4) since July 2005 when the country allowed the yuan to (5) within a daily band of 0.3 percent. The analysts are expecting the currency to rise (6) by the end of this year. But if the yuan rose 20 to 30 percent, as some U. S. politicians are demanding, it would (7) causing a recession and deflation. Similar advice to allow an abrupt appreciation of a currency led to (8) in 1997, and came very close to destroying (9) . The U. S. economist says that investors want foremost to (10) associated with large fluctuations in currency and inflation. They (11) after evaluating risks to benefits such as (12) . A rising yuan would drive up labor costs for foreign investors and would not (13) .Earlier reports said that currency speculators had pumped (14) U.S. dollars into China by the end of last year, with another 70 billion U. S. dollars (15) in the first three months of this year. There is no way to (16) of this type of investment and many economists disagree that (17) is so high. Instead of further appreciating its currency, China should make the yuan (18) . If the yuan were more easily converted into foreign currencies it would allow Chinese companies to expand overseas, (19) , and provide management experience and capital that China needs. It would also (20) and reduce speculative money coming into the country.