门诊对重度慢性疼痛患者开具的麻醉药品控缓释制剂，每张处方不得超过 A．1次常用量 B

不是中央性颌骨骨髓炎临床表现的是（）

A.常常先有间隙感染的表现

B.患处多数牙疼痛、松动

C.下唇麻木和感觉异常

D.牙周溢脓

E.颌下淋巴结肿痛

彩色多普勒血流显像中的彩色镶嵌表示（）。

A.层流

B.湍流

C.迎向探头的血流

D.离开探头的血流

E.以上都不是

断面在紫外灯下皮部显淡蓝紫色、木部黄色荧光（）

A．白芷

B．狗脊

C．黄连

D．黄丝郁金

E．人参

The strategies for handling risk comprise of two main types: negative risks, and positive risks. The goal ofthe plan is to minimize threats and maximize opportunities. When dealing with negative risks, there are three main response strategies（）,rransfer ,Mitigate.

A.Challenge

B.Exploit

C.Avoid

D.Enhance

设有如下程序：
Prirate Sub Form_Click()
Dim a As Integer,b AS Integer
a=20:b=50
p1 a,b
p2 a,b
p3 a,b
Print"a="；a,"b=";b
End Sub
Sub p1(x As Integeh By Val y As Integer)
x=x+10
y=y+20
End Sub
Sub p2(ByVal x As Integer,y As Integer)
x=x+10
　y=y+20
End Sub
Sub p3 (ByVal x As Integer,ByVal y As Integer)
　x=x+10
　y=y+20
End Sub
该程序运行后，单击窗体，则在窗体上显示的内容是：a=______和b=______。