皮皮学,免费搜题
登录
搜题
【单选题】
A Biological Clock Every living thing has what scientists call a biological clock that controls behavior. The biological clock(1)plants when to form. flowers and when the flowers should open. It tells insects when to(2)the protective cocoon (防护卵袋) and fly away, and it tells animals and human beings when to eat, sleep and wake. Events outside the plant and animals(3)the action of some biological clocks. Scientists recently found, for example, that a tiny animal changes the color of its fur because of the(4)of hours of daylight. In the short(5)of winter, its fur becomes white. The fur becomes gray brown in(6)in the longer hours of daylight in summer. Inner signals control other(7)clocks. German scientists found that some kind of internal clock seems to order birds to begin their long migration(8)twice each year, Birds(9)from flying become restless when it is time for the trip,(10)they become calm again when the time of the flight has ended. Scientists say they are beginning to learn which(11)of the brain contain biological clocks. An American researcher, Martin Moorhead, said a small group of cells near the front of the brain(12)to control the timing of some of our actions. These(13)tell a person when to wake, when to(14), and when to seek food. Scientists say there probably are other biological clock cells that(15)other body activities.
A.
says
B.
asks
C.
talks
D.
tells
拍照语音搜题,微信中搜索"皮皮学"使用
参考答案:
参考解析:
知识点:
.
..
皮皮学刷刷变学霸
举一反三
【单选题】受弯构件正截面承载力计算中,截面抵抗矩系数 取值为:( )。
A.
x(1-0.5x)
B.
x(1+0.5x)
C.
1-0.5x
D.
1+0.5x
【单选题】氯气为()色,窒息性气体,有剧毒,发生漏氯或跑氯时,处理应佩戴氧气面具或防毒面具。
A.
红色
B.
黄绿
【判断题】氯气为黄绿色,窒息性气体,有剧毒,发生漏氯或跑氯时,处理应佩戴氧气面具或防毒面具。无防毒面具或氧气面具时,不可用湿毛巾捂住口鼻,并迅速离开氯气泄漏点,不能顺风离去。
A.
正确
B.
错误
【单选题】受弯构件正截面承载力计算中,截面抵抗矩系数α s 取值为()
A.
ξ(1-0.5ξ)
B.
ξ(1+0.5ξ)
C.
1-0.5ξ
D.
1+0.5ξ
【判断题】对于固定资产借款发生的利息支出,在竣工结算前发生的,应予资本化,将其计入固定资产的建造成本;在竣工结算后发生的,则应作为当期费用处理。( )
A.
正确
B.
错误
【判断题】正火的冷却速度比退火稍快,正火后得到的珠光体组织比较细密、强度、硬度比退火钢高。
A.
正确
B.
错误
【简答题】氯气为黄绿色,窒息性气体,有剧毒,发生漏氯或跑氯时,处理应佩戴氧气面具或防毒面具。无防毒面具或氧气面具时,可用湿毛巾捂住口鼻,并迅速离开氯气泄漏点,()顺风离去。
【单选题】氯气为黄绿色,窒息性气体,有剧毒,发生漏氯或跑氯时,处理应佩戴氧气面具或防毒面具。无防毒面具或氧气面具时,()湿毛巾捂住口鼻,并迅速离开氯气泄漏点,不能顺风离去。
A.
可用
B.
不可用
【判断题】正火的冷却速度比退火快,得到的组织细、强度、硬度高。
A.
正确
B.
错误
【简答题】甲公司为国有独资企业,经批准自2008年1月1日执行企业会计准则,甲公司对所得税一直采用资产负债表债务法核算,适用所得税率为25%,甲公司自设立以来一直按照净利润的10%提取法定盈余公积,未计提任意盈余公积。 (1)为执行企业会计准则,甲公司对2008年以前的会计资料复核,发现以下问题: 1甲公司自行建造的办公楼已于2007年6月30日达到预定可使用状态,并投入使用,甲公司未按规定在6月30日办理...
相关题目: