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【简答题】
完形填空。 Most American families like to have a holiday__ 1 __summer. Summer is season(季节) __ 2 __holidays. It is very hot during the months of July and August. Children do not go to school during these __ 3 __months. Some __ 4 __like to stay at home during the holiday. They work in the garden, visit friends, __ 5 __books, or __ 6 __TV. Many families __ 7 __their lunch to a park or somewhere far __ 8 __the city. They like to eat where there are many trees or there is a nice lake. If they live near the sea, they often go to the beach. They can fish , swim or enjoy the sun there. America is a large country. Many families travel by ___9__or by train to see interesting places. They also travel by plane to a foreign country. Many big cities have many famous buildings, theatres, shops and other places__ 10 __traveleres. (     )1. A. for (     )2. A. to (     )3. A. one (     )4. A. people (     )5. A. see (     )6. A. see (     )7. A. takes (     )8. A. from (     )9. A. car (     )10. A. for B. in B. of B. two B. peoples B. watch B. watch B. take B. away B. a car B. in C. on C. for C. three C. man C. look C. look C. took C. to C. their car C. on D. at D. about D. four D. woman D. read D. read D. are taking D. off D. cars D. at
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【简答题】铝合金门窗具有( )的特点。
【多选题】建筑材料中,铝及铝合金的特点是( )。
A.
塑性好
B.
强度高
C.
经加工可用于加气混凝土的发气
D.
可用于铸铁、钢材等的防腐
E.
主要用于装配各种类型的石膏板、吸声板
【单选题】根据细胞的寿命可粗略的分为三类:①寿命接近于动物的整体寿命;②缓慢更新的细胞,其寿命比机体的寿命短;③快速更新的细胞。下列细胞中,属于第一类的细胞是
A.
神经元、脂肪细胞、肌细胞
B.
肝细胞、胃壁细胞
C.
表皮细胞、红细胞、白细胞
D.
肾皮质细胞、骨细胞、角膜上交细胞
【单选题】下列细胞中寿命比较长的是( )。
A.
骨髓基质细胞
B.
人的角质层细胞
C.
肝细胞
D.
神经元
E.
脂肪细胞
【单选题】根据细胞的寿命可以粗略地分为三类:①寿命接近于动物的整体寿命;②缓慢更新的细胞其寿命比机体的寿命短;③快速更新的细胞。下列细胞中,属于第一类的细胞是()。
A.
神经元、脂肪细胞、肌细胞
B.
肝细胞、胃壁细胞
C.
表皮细胞、红细胞和白细胞
D.
肾皮质细胞、骨细胞、角膜上皮细胞
【单选题】肝细胞的寿命为
A.
3天
B.
30天
C.
500天
D.
几十年
【多选题】变形铝合金的特点有( ).
A.
强度高
B.
成分波动大
C.
力学性能好
D.
生产成本低
【简答题】压铸铝合金的特点是什么?
【单选题】由于机体内各类细胞寿命不同,在机体组织细胞动态分类中肝细胞属于:
A.
依赖线粒体的膜受体细胞凋亡途径
B.
不依赖线粒体的膜受体细胞凋亡途径
C.
不依赖细胞膜的膜受体细胞凋亡途径
D.
以上全对
E.
以上全错
【单选题】对机会成本的正确理解是() (1)主观损失,非实际损失;(2)决策相关成本;(3)最好的选择的收益;(4)只要有选择就有机会成本;(5)机会成本越大说明选择越好;(6)有唯一选择时机会成本为零。
A.
(1)(3)(4) (6)
B.
(1)(2)(3)(4) (6)
C.
(1)(2)(3)(4)(5) (6)
D.
(1)(2)(4) (6)
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