评价高血压健康教育的效果，可以采用哪个指标（）。 A.高血压防治知识的知晓率、高血压

如图所示，以v₀=10 m/s的水平速度抛出的物体，飞行一段时间后，垂直地撞上θ=30°的斜面，则物体的飞行时间为(g=10 m/s²)

A．

B．

C．

D．2s

货车车种分类根据（）确定，分类表以外的车辆按实际车型统计。

A、用途

B、货物种类

C、车号

D、基本记号

Most computer systems are (66) to two different groups of attacks: Insider attacks and outsider attacks. A system that is known to be (67) to an outsider attack by preventing (68) from outside can still be vulnerable to the insider attacks accomplished by abusive usage of (69) users. Detecting such abusive usage as well as attacks by outsides not only provides information on damage assessment, but also helps to prevent future attacks. These attacks are usually (70) by tools referred to as Intrusion Detection Systems.

（68）处填（）。

A．visit

B．access

C．I/O

D．read/write

安全生产——（）

李某向某省公安厅申请公开《关于实行“破案追逃”新机制的通知》（公通字〔2009〕91号）。下列说法正确的是（）。

A.若该文件属于秘密，某省公安厅应当答复李某不予公开并说明理由

B.若该文件属于秘密，某省公安厅可以不答复李某

C.若不能确定该文件能否公开，应先请示国 * * 密局再答复李某

D.若该文件属于秘密，省公安厅可以该文件不存在为由告知李某