决定齿轮尺寸的最基本的三个参数是()。 A.齿数z、齿距kp压力角α B.齿数z、模

题型:单项选择题

问题:

决定齿轮尺寸的最基本的三个参数是()。

A.齿数z、齿距kp压力角α

B.齿数z、模数m、压力角α

C.齿数z、模数m、齿距kp

D.齿距kp、模数m、压力角α

考点:吊车司机考试中级吊车司机考试中级吊车司机考试题库
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I got a job teaching special education at a school in Coachella, California, a desert town about 170 miles from home. It was no (1) job. Street gangs (2) around the school after dark.

"Be careful, " Dad warned me during one of my frequent weekend (3) home. He was concerned about my living (4) , but I needed to be on my own.

One evening, I stayed after school to rearrange my classroom. (5) , I turned out the light and closed the door. Then I (6) toward the gate. It was (7) ! I looked around. Everyone had gone home.

After (8) all the exits, I found just enough (9) to squeeze under a gate in the back of the school. Then I walked toward my car, parked in a field behind the building.Suddenly I heard voices. I (10) around and saw at least eight boys following me. (11) my pace, I reached into my shoulder bag to get my key. I (12) all over the inside of my handbag. But the key wasn’t (13) ! Dear Lord, please help me, I prayed (14) . Suddenly, my fingers touched a loose key in my purse. I didn’t even know if it was for my car, but I took it out and (15) it. It worked!I opened the door, slid in and locked it—just (16) the teenagers surrounded the car. Trembling , I started the engine and (17) away. When I returned to my apartment, the phone was ringing. It was my Dad. I didn’t tell him about my experience; I didn’t want to (18) him. "Oh, I forgot to tell you!" He said, "I had a (n) (19) car key made and slipped it into your purse—just (20) you ever need it. \

5().

A.Tired 

B.Finished 

C.Frightened 

D.Hungry

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新生儿惊厥首选哪种药物止惊()

A.地西泮

B.水合氯醛

C.苯巴比妥

D.苯妥英钠

E.氯丙嗪

题型:单项选择题

某施工单位运来一批钢筋,对这批材料的检查,下列说法正确的是()。

A、对钢筋的质量检查应属于监理工程师的责任,施工单位不需要检查

B、对感觉的质量检查属于施工单位的责任,监理单位不需要检查

C、因厂家已出示了产品合格证和质量检验报告,股监理工程师和施工单位均不需要在对其进行检查

D、对钢筋的取样检查应该在监理工程师的监督下进行

题型:单项选择题

下列属于我国侦查主体的是()

A.人民检察院

B.公安机关

C.法院

D.军队保卫部门

题型:单项选择题

来自间叶组织的肿瘤是().

A.基底细胞癌

B.血管肉瘤

C.多发性骨髓瘤

D.恶性多形性腺瘤

E.恶性胶质细胞瘤

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