对铝合金管道、管杆、阀门进行脱脂处理时，宜采用脱脂剂为( )。A．四氯化碳 B．工

Joe Brown had a shop. He sold meat in his shop. One Thursday a woman came into his shop at five to one. “I’m sorry I’m late,” she said. “I need some more meat for my dinner tonight.” Joe had only one piece of meat in his shop. He took it out of the fridge and said, “This is $6.50.””That piece is too small,” the woman said, “haven’t you got anything bigger?” Joe went into the room behind his shop, put the piece of meat into the fridge, took it out again and closed the door with lots of noise. Then he brought the piece of meat to the woman and said, “This piece of meat is bigger and more expensive. It’s $8.75.””Good ,” the woman said with a smile , “give me both of them, please.”

小题1:Joe Brown was ______.

A．a waiter(侍者)

B．a runner

C．an singer

D．a shopkeeper小题2:When did the woman come to Joe’s shop?

A．Early in the morning.

B．Early in the afternoon.

C．Late in the evening.

D．At about one o’clock at night.小题3:Why didn’t the woman want that piece of meat?

A．Because she had no money.

B．Because it was bad.

C．Because it wasn’t big enough.

D．Because it was too big.小题4:How many pieces of meat were kept in the fridge?

A．Only one piece of meat.

B．Two pieces of meat.

C．Several pieces of meat.

D．Many pieces of meat.小题5:Could Joe give the woman both pieces of meat?

A．Of course not.

B．Certainly.

C．He would try his best.

D．Yes, he could.

如图所示电路中，安培表和伏特表的示数分别为10mA和2V，伏特表的内阻为1000Ω．则待测电阻R_x的真实值为（　　）

A．150Ω

B．200Ω

C．250Ω

D．300Ω

艾森克认为：性格差异除表现为内外倾似外，还有稳定性和()性。

A．独立

B．敏捷

C．直觉

D．求实

下列除哪项外，均有清热除烦的功效（）

A.栀子

B.竹叶

C.淡竹叶

D.夏枯草

E.石膏

手持式电气设备的操作手柄和工作中必须接触的部分，必须有（）。