PLM2000破碎机电压是()V。A、660VB、1140VC、380VD、3300

题型:单项选择题

问题:

PLM2000破碎机电压是()V。

A、660V

B、1140V

C、380V

D、3300V

考点:采煤机司机考试采煤机司机考试题库
题型:单项选择题

根据句意和首字母完成单词,使句子完整正确。

1. We often have an English p_____________ on weekends.

2. When do they have a speech c_____________?

3. He is our m______ teacher. He sings very well.

4. I am twelve. Today is my t______ birthday.

5. —Do you know his date of b_____________? 

    —It's March 21st,too.

6. —What's your a_____________? 

    —I'm fifteen years old.

7. —Do they have an Art F_____________? 

    —No, they don't.

8. The eleventh month of the year is N__________.

9. We'll have a school t_____________ to Mountain Huang next month.

10. What's the d_____________ today? It's December 16th.

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女,50岁,8小时前进食涮羊肉,餐后3小时上腹部疼痛,呕吐3次。检查:血压70/40mmHg,心率120次/分,上腹部压痛,肌紧张,血淀粉酶1000U(酶法)。最可能的诊断是()

A.心肌梗死

B.急性重症胰腺炎

C.化脓性胆管炎

D.急性轻型胰腺炎

E.消化性溃疡前壁穿孔

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3.6gH2与足量的氧气充分燃烧后,立即将全部燃烧产物通过足量的Na2O2固体,最终固体质量将增加    

A.2.1g

B.3.6g

C.7.2g

D.8.4g

题型:单项选择题

按照题目所给的省力条件,请在下图中画出滑轮组绳子的绕法,用F表示人对绳子自由端的拉力(不计动滑轮重量和摩擦)

题型:单项选择题

不设警兆自变量,只通过警兆指标的时间序列变化规律来预警风险的方法称为()。

A.橙色预警法

B.黑色预警法

C.蓝色预警法

D.红色预警法

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