500Kg、1000Kg容器的液氯钢瓶外接螺纹规格（）。A、G3/4 B、G1/2

．一只电阻器两端的电压从2伏增加到2.8伏，通过该电阻器的电流增加了0.1安，则该电阻器的电阻值是________欧。

票据的承兑是指票据（）承诺在票据到期日支付汇票金额的票据行为。

A.持有人 

B.收款人 

C.付款人 

D.申请人

句型转换。

1. When I looked out of the window, I saw people working hard to remove the snow. (对划线部分提问)

     ____________________________________________________________________

2. Millie doesn't buy clothes made of animal fur. (对划线部分提问)

    ____________________________________________________________________

3. She hurt her left leg but it was not very serious.

   Her left leg __________ hurt very ___________.

4. "Who are you looking for?" Tom asked Millie.

    Tom asked Millie who she _________ _________ for.

5. I knew something about wetlands after our teacher told us.

    I knew ________ about wetlands ________ our teacher told us.

纳税人伪造税务登记证件的，处5000元以上1万元以下的罚款；情节严重的，处1万元以上5万元以下的罚款。( )

简述北洋政府时期中国的工人阶级有哪些独有的特点。