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【判断题】
线性直流电源中的调整管工作在放大状态，开关型直流电源中的调整管工作在开关状态。A.
正确
B.
错误
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反馈参考答案：
举一反三
【单选题】Why is the woman asking for the man's assistance?
A.
He used to be a psychologist.
B.
He wrote a book on the subject.
C.
He studied the topic in university.
D.
He is a stock analyst.
【单选题】What's the problem, Harry?-()
A.
No problem
B.
No trouble at all
C.
Thank you for asking me about it
D.
I can't remember where I left my glasses
【单选题】应用标准套筒滚子链传动的额定功率曲线,必须根据_____来选择链条的型号和润滑方法。
A.
链条的圆周力和传递功率
B.
小链轮的转速和计算功率
C.
链条的圆周力和计算功率
D.
链条的速度和计算功率
【单选题】— He works quite hard. — Maybe you don't know that he always ____ without asking for leave when he ____ in another company. [ ]
A.
went to work; was
B.
goes to work; is
C.
didn't go to work ; was
D.
doesn't go to work; is
【判断题】He's asking you to look at both sides of the case and come to an emotional decision.
A.
正确
B.
错误
【简答题】He's asking you to look at both sides of the case and come to a decision. (reasonable)
【多选题】关于氮平衡,正确的说法有( )
A.
氮平衡时，蛋白质的摄入量大于排出量
B.
氮平衡可用于评价人体的蛋白质营养状况
C.
负氮平衡常见于老年人和妊娠妇女
D.
健康成年人最好出现正氮平衡
E.
负氮平衡可见于烧伤病人
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