在日光灯电路中接有启动器、镇流器和日光灯管,下列说法中正确的是() A.日光灯点

题型:选择题

问题:

在日光灯电路中接有启动器、镇流器和日光灯管,下列说法中正确的是(   )

A.日光灯点燃后,镇流器和启动器都不起作用

B.镇流器在点燃灯管时产生瞬时高压,点燃后起降压限流作用

C.日光灯可以接在交流电路中使用,也可以直接接在直流电路中使用

D.日光灯点亮后,拿开启动器,日光灯仍能正常发光

考点:自感现象
题型:选择题

金属烤瓷冠舌侧龈边缘最好为

A.1mm肩台

B.0.5mm凹形

C.刃状

D.凿状

E.1.5mm

题型:选择题

硬脑膜外血肿多由哪条血管破裂引起()

A.大脑中动脉

B.颞浅动脉

C.枕动脉

D.脑膜中动脉

E.海绵窦

题型:选择题

当你想要顾客买你的产品时,可采取下列哪种沟通形式?()

A、参与

B、征询

C、告知

D、说服

题型:选择题

The following data sufficiency problems consist of a question and two statements, labeled (1) and (2), in which certain data are given. You have to decide whether the data given in the statements are sufficient for answering the question. Using the data given in the statements plus your knowledge of mathematics and everyday facts (such as the number of days in July or the meaning of counterclockwise), you must indicate whether.

What is the value of the greater of two numbers if one of the numbers is three times the smaller number ?()
(1) One of the numbers is 12.
(2) The sum of the two numbers is 16.

A. Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.

B. Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.

C. BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.

D. EACH statement ALONE is sufficient.

E. Statements (1) and (2) TOGETHER are NOT sufficient.

题型:选择题

对凝血过程描述不准确的是

A.凝血过程属于正反馈控制
B.凝血过程是一系列生化反应的过程
C.凝血酶原激活物的形成有两种途径
D.凝血因子都是蛋白质

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