当9x2=121时,求x的值。

题型:计算题

问题:

当9x2=121时,求x的值。

考点:平方根
题型:计算题

有关荚膜描述错误的是()

A.具有免疫原性,可用于鉴别细菌

B.可增强细菌对热的抵抗力

C.具有抗吞噬作用

D.一般在机体内形成

E.化学成分可是多糖,也可是多肽等

题型:计算题

假设某公司股票当前的市场价格是每股80元;该公司上一年末支付的股利为每股1元,以后每年的股利以一个不变的增长率2%增长;该公司下一年的股息发放率是25%。则该公司股票下一年的市盈率是( )

A.19.61倍

B.20.88倍

C.17.23倍

D.16.08倍

题型:计算题

在经历二十世纪三十年代的大萧条过后,有经济学家认为导致资本主义自由竞争市场所带来的过剩危机的根本原因是有效需求不足,而政府活动可以增加有效需求,从而缓解甚至消除过剩危机。持这一观点的代表性经济学家是()

A.斯密

B.哈耶克

C.弗里德曼

D.凯恩斯

题型:计算题

高氯酸滴定液( )

A.氯化钠
B.氧化锌
C.重铬酸钾
D.邻二甲酸氢钾
E.对氨基苯磺酸


标定下列滴定液所用的基准物质是

题型:计算题

Holidays are special times of (1) from work and other routines. Holidays are often times for celebration, (2) , eating, drinking, travel, and family (3) . In most cultures the scheduling of holidays originally was related to the (4) , the (5) cycle, and (6) . Christmas, December 25, celebrates the (7) of Jesus, but it is not actually known whether Jesus was (8) in the wintertime Over the years Christmas has come to symbolize goodwill and (9) for both Christians and non-Christians, and the (10) of Christmas threatens to replace generosity with greed. Other important holidays in America are Valentine’s Day, St. Patrick’s Day, April Fools’ Day, and (11) . On Valentine’s Day, people give cards, chocolates, flowers, and kisses to their (12) and sweethearts. During Easter Week in late March or early April, Christians remember the death and (13) of Jesus. Although not actually a holiday and has no religious (14) , April Fools’ Day, celebrated on April 1, is a day when people play embarrassing (15) on their fiends and (16) and even on their teachers. In (17) , Labor Day is celebrated on May 1, whereas in (18) and the United States, labor and laborers are honored by a (19) holiday on the first (20) in September.

Holidays are special times of (1) from work and other routines. Holidays are often times for celebration, (2) , eating, drinking, travel, and family (3) . In most cultures the scheduling of holidays originally was related to the (4) , the (5) cycle, and (6) . Christmas, December 25, celebrates the (7) of Jesus, but it is not actually known whether Jesus was (8) in the wintertime Over the years Christmas has come to symbolize goodwill and (9) for both Christians and non-Christians, and the (10) of Christmas threatens to replace generosity with greed. Other important holidays in America are Valentine’s Day, St. Patrick’s Day, April Fools’ Day, and (11) . On Valentine’s Day, people give cards, chocolates, flowers, and kisses to their (12) and sweethearts. During Easter Week in late March or early April, Christians remember the death and (13) of Jesus. Although not actually a holiday and has no religious (14) , April Fools’ Day, celebrated on April 1, is a day when people play embarrassing (15) on their fiends and (16) and even on their teachers. In (17) , Labor Day is celebrated on May 1, whereas in (18) and the United States, labor and laborers are honored by a (19) holiday on the first (20) in September.

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