回收操作时，就观察回收泵出口（）变化。 A.压力 B.流量 C.流速 D.颜色

—Airplane design is a job ______ you to work 10 to 12 hours a day and sometimes seven days a week.

—_______. I think airplane design needs good teamwork as well. [ ]

A. that need; So it is

B. that needs; So it is

C. which needs; So is it

D. which need; So is it

插补运动的实际插补轨迹始终不可能与理想轨迹完全相同。（）

In the United States, average fuel efficiency of newly manufactured domestic cars, although remaining worse than that of newly manufactured imported cars, substantially improved between 1983 and 1988. Average fuel efficiency of new domestic cars has not improved since, but the difference in average fuel efficiencies of new domestic cars and new imported cars has steadily decreased.
If the statements above are true, which of the following must also be true on the basis of them

A．Average fuel efficiency of domestic cars manufactured after 1988 was better than that of imported cars manufactured before 1988.

B．Average fuel efficiency of newly manufactured domestic cars has steadily worsened since 1988.

C．Average fuel efficiency of newly manufactured imported cars has steadily worsened since 1988.

D．Average fuel efficiency of newly manufactured imported cars has steadily improved since 1983.

E．(E) Average fuel efficiency of imported cars manufactured in 1983 was better than that of imported cars manufactured in 1988.

下列关于肾盂癌的说法哪几项是错误的（）

A.膀胱镜是选择性检查

B.间歇无痛肉眼血尿为晚期症状

C.根治手术应切除患侧肾和输尿管上段

D.鳞状细胞癌罕见，多与长期尿石、感染等刺激有关

E.新鲜尿液标本或逆行插管收集患侧肾盂尿可以发现癌细胞

吕某，女，15岁，为某市中学生，是一起抢劫案的目击证人，下列有关公安机关在询问吕某过程中应当遵守的规则包括：

A．对吕某进行询问时，应当通知其父母到场

B．公安机关询问吕某时可以到其住所进行

C．公安机关在询问吕某时候可以通知吕某到公安机关提供证言

D．如果此案还有另外一个证人陈某，公安机关应当安排二人当面对证