下列不属于杂质范畴的是（） A.药物中的残留溶剂 B.药物中的多晶型 C.药物合成中

A driver stopped his car on a street side to have a rest. As he lay down in the seat and closed his eyes, a person came up and knocked at the window to ask him the time. The driver opened his eyes and looked at his watch. “It’s 8:05,” he said. Then he went to sleep again. But soon he was waken up again because a second person was knocking at the window. “Sir, do you know the time?” he asked. The driver looked at his watch, and told him it was half past eight.

In this way, the driver thought he could not have a good rest, so he wrote a short note and stuck it on the window for all to see. It said, “I don’t know the time.”

Again, he lay down in the seat for his sleep. A few minutes later, a third person came and began to knock at the window, “Hey, sir,” he said. “It is a quarter to nine.”

小题1:Where did the driver sleep?

A．At the window.

B．In the street road.

C．In his car

D．In his room.小题2:How long had the driver been there when the third person called him?

A．40 minutes.

B．25 minutes.

C．50 minutes.

D．70 minutes.小题3:Why did the driver write a note and stick it on the window?

A．Because he didn’t know the time.

B．Because he didn’t want anybody to trouble him.

C．Because he needed somebody to wake him up.

D．Because he wanted somebody to tell him the time.小题4:The third person knocked at the window to ______.

A．ask him the time

B．ask him not to sleep

C．see if the driver was sleeping

D．tell him what time it was

当屋而坡度( )时，一般不宜使用卷材作防水层。

A．≤3%

B．3%～15%

C．≥15%

D．＞25%

急性心梗出现室性早搏，治疗首选（）

A.洋地黄

B.普萘洛尔（心得安）

C.奎尼丁

D.利多卡因

E.普鲁卡因胺

下面关于B737-600增压系统后溢流活门电源的说法正确的是（）。

A.交流马达用交流电、直流马达用直流电

B.交直流马达都用直流电

C.自动和人工马达都用交流电

D.自动和人工马达都用直流电

在EAN-13条码中，中国物品编码的前缀码是（）

A、460

B、690

C、691

D、692