营业场所电源总闸应选用:()
A.30mA漏电断路器
B.300mA漏电断路器
C.断路器
D.闸刀开关
参考答案:C
—What do you think of the new English teacher?
—___she is an elegant lady, she can be extremely difficult to work with.
A.Even if
B.When
C.While
D.Once
突然发生,完全不能用患者当时的处境和心理背景来解释的妄想是
A.继发性妄想
B.关系妄想
C.被害妄想
D.原发性妄想
E.超价观念