近端指间关节呈梭形肿胀常见于：A．类风湿关节炎 B．风湿性关节

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问题单项选择题

近端指间关节呈梭形肿胀常见于：

A．类风湿关节炎

B．风湿性关节炎

C．骨性关节炎

D．痛风性关节炎

E．系统性红斑狼疮

答案

参考答案：A

单项选择题

Speaker A: The native American Craft Exhibit closed this afternoon.Speaker B: ______

A．Oh, no! I've wanted to see that for months.

B．Well, why didn't you take me to see the exhibit before it closed

C．Thank you. When will there be such an exhibit again

D．If I were you, I would have gone to see it.

单项选择题

在我国规定动力和照明用电的频率是（）。

A、10Hz

B、50Hz

C、60Hz

D、10至50Hz