[简答题]为什么说流体的初始分布是影响流体径向分布的最关键因素？

[单选题]静脉恒速滴注按一级动力学消除的某药时，到达稳态浓度的时间取决于
A.静滴速度
B.溶液浓度
C.药物半衰期
D.药物体内分布
E.血浆蛋白结合量

[单选题]根据《中华人民共和国道路交通安全法》规定：机动车行经人行横道时，应当减速行驶；遇行人正在通过人行横道，应当（ ）。
A.减速慢行
B.快速通过
C.停车让行
D.鸣车警告

[多选题]33077】220kV倒母线操作时,两母线的隔离开关有一段时间同时合上,此时对双母线的母差保护称为“内联”或“互联”。此时应( )。 ( )
A. 通过隔离开关的差动回路相连,并退出一组差动
B. 两母线的跳闸回路连通
C. 监视回路联动
D. 将母线TA二次回路短接

[单选题]–年4月，吴某在微博上散布H7N9禽流感在宁波某地爆发的谣言。当地警方依法对其作出拘留五日的处罚。吴某的行为属于：
A.A违纪行为
B.B行政违法行为
C.C民事违法行为
D.D犯罪行为

[单项选择]Some students at the Open University left school 20 years ago. (36) are younger but all must be at least 21 years old. This is one example of (37) the Open University is different (38) all the others. Its students must (39) work fulltime or be at home all day. They do not have to (40) any examinations before they are (41) . This is why the university is called "open". It was started (42) order to help people who (43) having a university education when they were young. The first name (44) the open university was "the University of the Air". The idea was to teach (45) the air, in other (46) , on radios and the television. (47) of the teaching is done like this. The student also receives (48) at one of 283 study centers in the country. He must also (49) three weeks every summer as a (50) student. Tutors and students (51) and study together,
A. After
B. When
C. Though
D. If