我国推广食盐加碘预防大脖子病，是在食盐中加入一定量的碘酸钾（KIO3）．在碘酸钾

补全对话

(At Mr. White's office in a middle school)

A: Hello! (1)_________________?

B: Speaking, please.

A: I'm Peter's mother. I'd like to ask for my son.

B: (2)_________________?

A: He doesn't feel well this morning. He has a cold.

B: (3)_________________. Is it serious?

A: Not very serious. But the doctor asked him to stay in bed and have a good rest.

B: Don't worry. (4)____________________.

A: Thank you , sir. Goodbye!

B: (5)_________________!

超声波显示缺陷的灵敏度比射线探伤高得多，故经超声波探伤的焊缝不必再进行X射线探伤。

十进制数54转换成二进制整数是( )。

A．0110110

B．0110101

C．0111110

D．0111100

由于金融机构的交易系统不完善、管理失误、控制缺失、诈骗或其他一些人为错误而导致潜在损失，这体现了金融风险中的______。

A．金融市场风险
B．信用风险
C．流动性风险
D．运营风险