杜某，男，4岁，乳牙。乳磨牙近中关系，前牙反，下颌前伸，位置前移。

如果设计上颌垫活动矫治器矫治，垫的高度应使前牙打开

A:0mm B:0．5～1mm C:1～2mm D:2～3mm E:3～4mm

杜某，男，4岁，乳牙。乳磨牙近中关系，前牙反，下颌前伸，位置前移。

反解除后，双侧垫每次应磨除

A:0．5mm以内 B:0．5～1．0mm C:0～2．0mm D:1／3 E:1／2

在Linux系统smb.conf文件中，max disk size=0语句的作用是 (40) 。

A:对磁盘空间的大小没有限制 B:启用对磁盘空间的大小的限制功能 C:将把磁盘空间的大小设为最小 D:该配置语句是错误的，磁盘空间的大小不能为0

在Linux系统smb.conf文件中，max disk size=0语句的作用是（）。

A:对磁盘空间的大小没有限制 B:启用对磁盘空间的大小的限制功能 C:将把磁盘空间的大小设为最小 D:该配置语句是错误的，磁盘空间的大小不能为0

在Linux系统smb.conf文件中，max disk size=0语句的作用是 (39) 。

A:对磁盘空间的大小没有限制 B:启用对磁盘空间的大小的限制功能 C:把磁盘空间的大小设为最小 D:该配置语句是错误的，磁盘空间的大小不能为0

Since RAM is only active when the computer is on, your computer uses disk to store information even when the computer is off. Which of the following is true ______

A:When your computer is on, only RAM is used to store information B:When your computer is on, only disk drives are used to store information C:When your computer is oft, only RAM is used to store information D:When your computer is off, only disk drives are used to store information

Since RAM is only active when the computer is on, your computer uses disk to store information even when the computer is off. Which of the following is true ______

A:When your computer is on, only RAM is used to store information. B:When your computer is on, only disk drives are used to store information. C:When your computer is off, only RAM is used to store information. D:When your computer is off, only disk drives are used to store information.

在Linux系统smb.conf文件中，max disk size=0语句的作用是 (39) 。

A:对磁盘空间的大小没有限制 B:启用对磁盘空间的大小的限制功能 C:把磁盘空间的大小设为最小 D:该配置语句是错误的，磁盘空间的大小不能为0