发动机起动后,解除紧急制动。待停车压力表压力升起至()MPa后,车辆才能起动。A、1

题型:单项选择题

问题:

发动机起动后,解除紧急制动。待停车压力表压力升起至()MPa后,车辆才能起动。

A、10~11

B、6~ 9

C、2.5~3.5

考点:胶轮车司机胶轮车司机题库
题型:单项选择题

单词或词组拼写

根据下列句子中的汉语注释,在答题纸相应的位置上写出空缺处各单词或词组的正确形式.

小题1: Xie Lei told me that when I saw her waiting in a queue at a student        (食堂) between lectures.

小题2: When I miss my family, it is a great comfort to have a      (替代) family to be with.

小题3: I was       (麻木的) with shock when I saw the mark E on my paper.

小题4: More importantly, I am now a more        (自主的) learner.

小题5:By the time California       (选择) to become the thirty-first federal state of the USA in 1850, it was already a multicultural society.

小题6:      (意大利人) mainly fishermen but also wine makers, arrived in California in the late 19th century.

小题7: The conductor could not control the situation and the tram      (滑动) down the hill dragging the horses with it.

小题8: Cloning plants is       (简单的) while cloning animals is very complicated.

小题9: So the chance of dinosaurs ever returning to the earth is       (仅仅) a dream.

小题10: It is a difficult task to      (从事)

小题11:        (在他看来),what other people thought was not the most important thing.

小题12:The customs and languages of the immigrants        (继续存在) in their new home.

小题13: There is a fascinating drive       (划出) for tourists.

小题14: But at last the determination and patience of the scientists       (回报) in 1996 with a breakthrough — the cloning of Dolly the sheep.

小题15: From time to time people suggest that extinct animal like dinosaurs, can possibly be       (重生) through cloning.

题型:单项选择题

大肠菌群的检验步骤错误的是()

A.检样稀释

B.前增菌

C.乳糖发酵试验

D.分离培养

E.证实试验

题型:单项选择题

导致市场失灵的主要原因有()

A.垄断

B.不完全信息

C.供求关系

D.外部性

E.公共物品

题型:单项选择题

声音持续时间小于0.5秒,间隔时间大于1秒,声压变化大于40d取者称为()

A.连续性噪声

B.脉冲性噪声

C.稳态噪声

D.非稳态噪声

E.高频噪声

题型:单项选择题

滤芯更换时,()松紧程度要适当,以免滤芯破损。

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