图示的桥式整流电路中，已知Ui=100sinwt（V），Ri=1kΩ，若忽略二极管的

医疗卫生机构违反《医疗废物管理条例》规定，导致传染病传播，给他人造成损害的，应当依法承担（）

A.行政责任

B.行政赔偿责任

C.刑事责任

D.刑事赔偿责任

E.民事赔偿责任

—Why didn't Mr.Smith arrive on time for the meeting?

—He must have been ________ on his way here in the traffic jam.

A．held up

B．put up

C．taken up

D．given up

服务招标区别于工程和货物招标采购，其( )并不是评价投标人竞争力的主要指标。

A．服务人员素质能力

B．服务方案优劣

C．服务价格

D．服务质量

Which of the following statement is NOT true of therapeutic cloning a. "Therapeutic" cloning is used mainly for research purposes and therefore should be allowed to continue. b. "Therapeutic" cloning is used for medical purposes and not for reproducing full human beings. c. "Therapeutic" cloning is used for replacing the diseased parts of human organs. d. Brain cell can be used in the future to cure the Parkinson’s disease.

眶下神经阻滞的适应证是

A．牙周炎所致的上牙疼痛

B．鼻窦炎所致的上颌部疼痛

C．三叉神经第Ⅱ支疼痛和其他情况引起的下眼睑、鼻旁、上唇、上颌中切牙和尖牙等部位的疼痛

D．三叉神经眼支(第Ⅰ支)疼痛

E．三叉神经下颌支(第Ⅲ支)疼痛