当你想询问4月22日是什么节日时,可以说( ) A: Do you know what day is April 22 B: Do you like April 22 C: What do people do on April 22

柔性制造单元上下料编程实例中,用于控制气缸顶料的信号是( ) A: DO[21] B: DO[22] C: DO[23] D: DO[24]

【单选题】22 A. 22 B. 22 C. 22 D. 22

Questions 22 to 25 are based on the conversation you have just heard. What do the people who attend the class do in the first part of the lesson（） A: Participate in group discussions. B: Take turns to make presentations. C: Listen to the teacher’s explanation D: Answer the teacher’s questions.

According to Paragraph 4, ( )? A: most states of America have passed the laws stating that workers must take some lunch break. B: the workers in the 22 states work fewer hours than those in the other states. C: the workers in the 22 states do not necessarily take a better lunch break than those in the other states. D: the workers in the 22 states take a longer lunch break than those in the other states.

某工厂生产车间３０人工人日产量原始数据如下： 20 21 21 24 23 22 20 21 22 23 24 20 24 21 22 22 23 24 22 21 22 23 22 21 21 22 22 23 22 23 试编制工人日产量频数分布表

When is the Earth Day? A: 22,March B: 22,August C: 22,April D: 22,November

表达式11+22、11+"22"、"11"+"22"、11&22、11&"22"、"11"&"22"的运算结果分别为____、____、____、____、____、____。

霍乱弧菌依据O抗原的不同有200多血清群，其中致病的有（） A: AO1群霍乱弧菌 B: BO39群霍乱弧菌 C: CO157群霍乱弧菌 D: DO22群霍乱弧菌 E: EO2群霍乱弧菌

Earth Day falls on ______. A: April 22 B: April 22, 1970 C: April 22, 1990 D: Sunday, April 22