设备工程监理资料是界定监理()的凭据。A．范围 B．责任 C．任务 D．大纲

下列项目中，应当征收增值税的有( )。

A．纳税人销售货物的同时代办保险而向购买方收取的保险费

B．从事汽车销售的纳税人向购买方收取的代购买方缴纳的车辆购置税、牌照费

C．纳税人销售软件产品并随同销售一并收取的软件安装费、维护费、培训费等收入

D．对增值税纳税人收取的会员费收入

完形填空

     Louise was 72 years old and she lived by herself. The first thing she noticed when she came

downstairs that Sunday morning was that her    1   window was open. In fact, it was so wide open that

she had    2   closing it. Then she realized that things were not in their proper    3   . Finally, when she

found her empty    4  on the kitchen table, she realized the awful    5   . At first, she didn't know what to

do. Then she decided to   6   her son, Derek.

     Derek's wife Sybil answered the phone, "It's your mother," she    7   him, coldly. Louise told Derek

about the open window, about things being in the wrong places and about the    8   missing from her

purse.

     "All right," said Derek, "Don't    9   anything. I'll be    10   in half an hour."

     Louise    11   and made herself a pot of tea and some toast. Then she went from room to room

wondering    12  anything else was missing.

     When Derek arrived, he was content to   13   her looking so calm. "Have you rung the     14  ?" he

asked. "No? Then I'll do that straight away." So he rang the police.

     As it was Sunday,   15  the only detectives were out. However, the police were polite, but vague

（含糊的）. "We'll send    16   round as soon as possible," they said.

     Derek telephoned his wife. "I'm not sure when I'll be home, love," he told her. "I've got to    17  for

the police." While Derek and his mother waited, Derek    18  the catches（挂钩）on the windows and

locks on the doors. All of them were old and some of the catches hardly    19   at all. Derek felt    20   .

His mother was an old woman, after all. "I'll have to change all these," he told her.

酸洗除垢的时间一般为（）。

A、1h～2h

B、2h～6h

C、6h～7h

D、7h～8h

正常细胞与肿瘤细胞在超微结构上没有质的差别。

哪些行为属农药生产？