铰链式活塞冷却机构根据其工作特点,适用于()。A.大型低速机油冷却式活塞 B.大、中

题型:单项选择题

问题:

铰链式活塞冷却机构根据其工作特点,适用于()。

A.大型低速机油冷却式活塞

B.大、中型柴油机水冷式活塞

C.大型低速机水冷式活塞

D.中、小型柴油机油冷式活塞

考点:海船船员考试柴油机的结构和主要部件柴油机的结构和主要部件题库
题型:单项选择题

情景对话。

     根据对话情景的内容,从对话后所给的选项中选出能够填入每一空白处的最佳选项,选项中有两

个为多余选项。

Carol:   1   

Brent: I'm really into watching foreign films. What about you?

Carol:   2   Do you enjoy camping?

Brent: Camping for an evening is OK, but I couldn't do it for much longer than one night!

Carol: Have you ever been camping in the Boundary Waters?

Brent: No, but I've always wanted to do that.   3   

Carol: It's fantastic. My family and I are very fond of the place.

Brent: Do you have any photos of any of your camping trips there?

Carol: Sure, would you like to see them?

Brent:   4   So, you must be pretty interested in photography then.

Carol: I'd call it one of my hobbies. Have you heard about the photography exhibit that's going on at the 

         art gallery this weekend?

Brent: Yes, I was planning on going.   5   Carol: Yes. In fact, maybe we could go together.

A. What kind of things do you do in your free time?

B. That’d be great.

C. How about at 11:00?

D. I like to do just about anything outdoors.

E. Do you know much about photography?

F. Are you?

G. I’ve heard it’s a beautiful place to go.

题型:单项选择题

平行板电容器两板间有匀强电场,其中有一个带电液滴处于静止,如图所示。当发生下列哪些变化时,液滴将向上运动

[ ]

A.将电容器的上极板稍稍下移

B.将电容器的下极板稍稍下移

C.将S断开,并把电容器的上极板稍稍下移

D.将S断开,并把电容器的下极板稍稍向左水平移动

题型:单项选择题

语音处理时,常把连续的语音信号通过/数转换,变换成数字信号。把一定范围内的声音强度用一个整数来表示,这称为 (12)

题型:单项选择题

有机磷杀虫药中毒治疗时最恰当的抢救措施是

A.阿托品+胆碱酯酶抑制剂

B.毛果芸香碱+胆碱酯酶抑制剂

C.毒扁豆碱+胆碱酯酶复活剂

D.阿托品+胆碱酯酶复活剂

E.重度中毒时单用阿托品

题型:单项选择题

风沙流

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