“不粘锅”的内层其实是在金属的内壁涂了一层聚四氟乙烯，故而不粘食物。以下对聚四氟

一个字节等于（）。

A.2个二进制位

B.4个二进制位

C.8个二进制位

D.6个二进制位

Speaker A: I'm going to the park with some friends for a barbecue on Sunday. Would you like to join usSpeaker B: ______

A．Why not on Saturday You see, I have an important appointment on Sunday.

B．Thanks, but unfortunately I have to take my sister to the airport on Sunday.

C．That's a wonderful idea. Barbecue is one of my favorites.

D．What preparation do you expect me to do for the barbecue

证券监管现场检查的重点是( )。

A．业务检查

B．风险检查

C．财务检查

D．合规检查

下列哪种物质是栓剂的水溶性基质

A.可可豆脂

B.脂肪酸甘油脂类

C.聚乙二醇

D.棕榈酸酯

钢梯及平台立柱不应在踢脚板上安装，除非踢脚板为（）的构件。

A、非承载

B、承载

C、钢材

D、石材