第9题: [单项选择]200mA型X线机可选择的最大管电流是()。 A. 10mA B. 30mA C. 50mA D. 100mA E. 200mA 参考答案:E 答案解析:
200mA型X线机可选择的最大管电流是200mA。
第10题: [单项选择]{{B}} Questions 19 to 22 are based on the conversation you have just heard.{{/B}} A. The woman should stop buying clothes. B. The woman shouldn’t worry too much. C. The woman should go shopping less. D. The woman shouldn’t buy so many clothes. 参考答案:D 答案解析:[听力原文]
W: I’m having trouble making ends meet. It looks like I have to make another phone call to m