离心泵泵体或压盖损坏无法修复，或大修费用超过设备原值的50%，或泵流量低于额定流量的

一般地说，热带城市喜欢用强烈而鲜明的白色或其他（）的色彩，主要利用其反射光和热的特性；地处 温带气候的城市则多利用与自然景观相近的色彩；处于寒冷地带的城市则习惯用庄重的（），因为深色物体容易吸收光和热。

HOLIDAY HOMES IN MALLORCA

Holiday houses in Mallorca sailing and fishing port -- quiet even in summer season. Beautifully situated houses with sights of sea and mountains, yet near to shops and restaurants. Cars and bicycles for hire. Sailing and sports clubs nearby.

ITALY IN COMFORT

Luxury coach（长途客运汽车） trips of Italy, out of normal holiday season. 21days to visit five Italian cities starting from London 1st May, 1st September. The trips are guided by professor Martin Davis, Head of Italian Studies, London University. See the arts and culture of historic Italy.

KIBBUTZ HOLIDAYS IN ISRAEL（以色列）

Working holidays on a kibbutz（ co -operative farm） in Israel. All nationalities welcome for one to three months, if prepared to work morning with kibbutz members.

Accommodation （住宿）, food and trips to historic sights all provided free - you pay only for the special low- cost return flight.

TWO WEEKS ON A CARIBBEAN ISLAND

Two-week holidays in the Hotel Splendid, on a lovely beach with golden sands and deep-blue sea. Tennis, golf, sailing and all water sports, trips around the island arranged. Near to town of Castries with lively evening entertainment--dancing.

1st November - 31st March = ￡ 720 per person

　　1st April - 30th October = ￡ 850 per person

　　Jack and his wife Mary, who have recently retired, want to see places of cultural and historic interest abroad, but Mary hates flying.

Michael, a young computer programmer, has been working hard and needs a holiday to relax in winter. He would like to go somewhere warmer and sunny, where he can swim in the sea, and he enjoys sports and dancing.

Henry and Kate, both teachers, and their two sons, have to take their holiday during the school summer holidays. There must be plenty for the boys to do, although Henry and Kate just want to have beautiful scenery, good food and wine--and peace.

小题1:Michael would most probably go to ________ for his holiday.

A．Italy　　　　

B．Israel

C．Mallorca

D．a Caribbean island小题2:The best holiday for Jack and Mary would be________.

A．the 21 - day coach trip of Italy

B．the 2 -week stay in the Hotel Splendid

C．the 14 -day trip around a Caribbean island

D．the working holidays for 1 -3 months on a kibbutz in Israel小题3:Henry and Kate and their sons would like________.

A．a holiday working on a kibbutz in Israel

B．a holiday visiting cities by coach in Italy

C．a holiday house in the fishing port in Mallorca

D．a holiday hotel on a lovely beach on a Caribbean Island小题4:You can find this passage most probably in ________.

A．a school library

B．a tourist agency

C．the post office

D．the museum

通过对监督对象进行治安监督检查，公安机关可以作出哪些处理( )

A．发现违章违法行为，依法予以处置或制裁

B．发现治安隐患，要求监督对象限期整顿改正

C．要求监督对象增强其自治、自防、自卫的能力

D．要求监督对象创造安全的生产和工作环境

1931年捷克斯洛伐克作家卡雷尔?恰佩克在他的科幻小说中，根据RoB.otA.（捷克文，原意为“劳役、苦工”）和RoB.otnik(波兰文，原意为“工人”），创造出“机器人”这个词。