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【单选题】
采用熔断式结构,位于燃气热水器燃烧室表面,串联在热水器的控制线路中。当其所感应的温度高于内部金属的熔点温度时,金属丝熔断,断开热水器控制线路,电磁阀关闭,热水器停止工作。这种安全装置为 。( )A.
机体过热防止装置
B.
防空烧保护装置
C.
水路过压保护装置
D.
熄火保护装置
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举一反三
【单选题】He rarely goes to the cinema.
A.
so does she
B.
she doesn't as well
C.
neither did she
D.
nor does she
【单选题】He rarely goes to the cinema, _____.
A.
so does she
B.
she doesn't as well
C.
nor does she
D.
either does she
【简答题】He rarely goes to the movies. 倒装:Rarely _____he go to the movies.
【单选题】I suppose he rarely goes to the cinema, ___________?
A.
does he
B.
doesn't he
C.
do I
D.
don't I
【单选题】已知英文字母 a 的 ASCII 代码值是十六进制 61H , 那么字母 d 的 ASCII 代码值是 ( ) 。 A )2H B)54H C)24H D)64H
A.
2H
B.
54H
C.
24H
D.
64H
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