振荡电路中的正反馈电路是形成自激振荡的必要条件之一。

男性，31岁，因受凉感冒，出现咳嗽、发热（最高体温38．6℃），静脉给予NS500ml+青霉素钠盐800万U，vd，1次／日；阿昔洛韦1．25g+5％GNS500ml，vd，1次／日。2天后，患者尿量每天350ml左右。尿常规：蛋白（++），隐血（+）；BUN24．2mmol／L，Cr1224．0μmol／L，钠129．0mmol／L，氯92．0mmol／L；ALP170IU／L，γ-GT51IU／L，U）H190IU／L，SGOT、SGPT及其他指标正常；血尿酸614μmol／L；B超示双肾形态和大小正常

阿昔洛韦中毒引起急性肾衰竭后的治疗不适当的是（）

A.停止继续使用阿昔洛韦

B.水化治疗

C.强制利尿

D.血液透析

E.给予谷胱甘肽还原酶抑制剂

D=Diarmuid，F= Feifei

D: (laughing to himself) Dear, oh dear.

F: Hi Diarmuid. What are you laughing at?

D: I’m just looking at my old class 1.            from my school days. They’ve been stored away for all these years. My mum 2.            them in the attic(阁楼).

F: What do they say?

D: Have a look for yourself.

F: Let me see. Let’s choose a 3.           . Ummm…here we are, History: (reading) "Diarmuid has failed to learn anything this year because he 4.            all his time chatting at the back of the classroom." Let’s look at another... Math: "Diarmuid must learn that it is not enough just to sit at his desk. He must pay attention to the lesson, and study hard out of class and do his homework."

D: I wasn’t very 5.            at math.

F: It seems you were an awful 6.           .

D: Well, it’s true I was never a swot(书呆子).

________ his spare time that his English has improved a lot.

A．So good use does he make of

B．Such good use does he make of

C．He makes very good use of

D．He makes so good use of

用来设置文件中下一个读写位置的语句是______ 。

A．Skip

B．Seek

C．FileAttr

D．Select

在编写Applet程序时，程序中必须有的import语句是（ ）。

A．-2

B．20

C．11

D．9