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【单选题】
已知高频功率放大器原工作在临界状态，当改变电源电压时，管子发热严重，说明管子进入了（）。A.
欠压状态
B.
过压状态
C.
仍在临界状态
D.
弱过压状态
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皮皮学刷刷变学霸
举一反三
【单选题】Construction of the new hospital is ______according to the timetable.
A.
． marching
B.
． achieving
C.
． progressing
D.
． moving
【简答题】外源性致热原的特点，正确的是（ ）。
【单选题】The hospital _______ will have been completed by the end of this year. [ ]
A.
to build
B.
having built
C.
built
D.
being built
【单选题】外源性致热原的特点,正确的是
A.
分子量小
B.
致热性可被蛋白酶类水解
C.
能激活血液中的中性粒细胞
D.
直接作用于体温调节中枢
E.
在体内最终由肝、肾灭活和排泄
【单选题】What is the notice mainly about?
A.
The new rules related to hospital staff
B.
The hospital's emergency procedures
C.
The regulations governing hospital visits
D.
The hospital patients' rights
【单选题】外源性致热原的特点,正确的是
A.
分子量较小
B.
其致热原性可被蛋白酶类所破坏
C.
能激活血液中的中性粒细胞和单核细胞
D.
直接作用于体温调节中枢
E.
在体内最终由肝、肾灭活和排泄
【单选题】Which of the following statements is true?
A.
New York Public Library is in a very huge building.
B.
The research libraries are totally supported by the local government.
C.
Andrew Carnegie was the owner of New York Public Library.
D.
New York Public Library is composed of many parts.
【单选题】The facilities of the older hospital ______.
A.
is as good or better than the new hospital
B.
are as good or better than the new hospital
C.
is as good as or better than that of the new hospital
D.
are as good as or better than those of the new hospital
【单选题】The workers were busy ________ new houses throughout the winter.
A.
build
B.
to build
C.
building
D.
built
【简答题】Why are there many rural workers who are trying to find jobs in the cities?
相关题目：
【单选题】外源性致热原的特点,正确的是
A.
分子量较小
B.
其致热原性可被蛋白酶类所破坏
C.
能激活血液中的中性粒细胞和单核细胞
D.
直接作用于体温调节中枢
E.
在体内最终由肝、肾灭活和排泄