保养制度规定操作人员必须对设备做到()。A、四懂、三会、四定 B、三会、三懂、三定

题型:单项选择题

问题:

保养制度规定操作人员必须对设备做到()。

A、四懂、三会、四定

B、三会、三懂、三定

C、四定、四懂、四定

D、会维修知识

考点:甲基叔丁基醚(MTBE)装置操作工甲基叔丁基醚初级操作工甲基叔丁基醚初级操作工题库
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用基因工程方法制造的白细胞介素—2工程菌,通过发酵工程可以实现白细胞介素—2的工业化生产。下列有关白细胞介素—2的正确叙述是[ ]

A.它是效应B细胞产生的一种抗体

B.它是效应T细胞产生的一种免疫活性物质

C.它是工程菌的初级代谢产物

D.它能直接杀伤靶细胞

题型:单项选择题

分类学家林奈把人归入                         目。

题型:单项选择题

Oracle针对Internet/Intranet的产品是

A.Oracle WebServer

B.Oracle WebListener

C.Oracle WebAgent

D.Oracle 7服务器

题型:单项选择题

Mary and Peter were having a picnic with some friends near a river when Mary shouted, “Look! That's a spaceship up there and it's going to land here.”

Frightened by the strange spaceship, _ 61  of the young people got into their cars and drove away as quickly as possible. Peter loved Mary and always stayed close to her. They, more __62 than frightened, watched the spaceship land and saw a door open. When nobody came out, they went to look __63 it. In the center of the floor, there was a pile of food. Peter followed Mary into the spaceship and did not __64  the door close behind him. The temperature fell rapidly and two young people lost their __65 .

When they came to, they were __66 to see that they were back by the river again. The spaceship had gone. __67 car was nearby.

“What happened?” asked Mary.

Peter scratched his head, saying slowly, “Don't ask me. Perhaps we had a __68 . Come on.It's time to go home.”

After driving about fifty meters, they found their way blocked by a thick wall made of something like __69 . On the other side of the wall, a few strange beings stopped to look through it and read a notice which, translated into English, said: “New arrivals at the zoo: a pair of __70  inhabitants in their natural surroundings with their house on wheels.”

61. A. both         B. all         C. several       D. most

62. A. tired        B. curious     C. confused      D. astonished

63. A. at           B. for         C. into          D. around

64. A. hear         B. watch       C. let           D. make

65. A. way          B. weight      C. speech        D. consciousness

66. A. pleased      B. disturbed   C. surprised     D. disappointed

67. A. A            B. Another     C. Their         D. No

68. A. game         B. dream       C. mistake       D. problem

69. A. glass        B. stone       C. wood          D. steel

70. A. city         B. space       C. land          D. Earth

题型:单项选择题

燃气管道在天花吊顶暗设,应符合以下()规定。

A.吊顶应设通风口

B.吊顶应密闭

C.吊顶应可拆卸

D.吊顶应不可拆卸

E.吊顶不密闭

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