主机遥控系统的最大转速限制起作用的条件是()。 A.主机实测转速大于最大限制转速 B

题型:单项选择题

问题:

主机遥控系统的最大转速限制起作用的条件是()。

A.主机实测转速大于最大限制转速

B.主机实测转速小于最大限制转速

C.车钟设定转速大于最大限制转速

D.车钟设定转速小于最大限制转速

考点:船舶电气与自动化船舶机舱自动化船舶机舱自动化题库
题型:单项选择题

Mr. Smith is an Englishman. He teaches English well. His English classes are very interesting. He likes us and we like him, too.

Mr Smith has two children—Tom and Lucy. Tom is seven and his sister Lucy is four. Tom goes to school but Lucy doesn’t. Mr Smith likes to wear(穿 )a T-shirt and jeans(牛仔裤).Football is his favourite sport. After school we often have a basketball match. Sometimes(有时) Mr Smith watches and joins us. He plays basketball just for fun.

小题1:Mr Smith is __________.

A.a Chinese teacher

B.an English driver

C.a Japanese teacher

D.an English teacher小题2:How many sons does Mr Smith have?

A.Only one

B.Two

C.Three

D.Not any小题3:Lucy doesn’t go to school because ___________ .

A.she looks beautiful

B.she is seven

C.she is only four

D.she doesn’t like school小题4:________ is Mr Smith’s favourite sport.

A.Basketball

B.Football

C.Running

D.Volleyball小题5:The story is about _________.

A.Mr Smith’s son

B.Mr Smith

C.Tom and Mary

D.a basketball match

题型:单项选择题

砖墙砌筑的水平灰缝厚度一般应为()㎜。

题型:单项选择题

高渗性缺水的治疗主要是纠正高渗状态,下列液体中首选()。

A.等渗盐水

B.5%葡萄糖溶液

C.平衡盐溶液

D.10%葡萄糖溶液

E.5%葡萄糖氯化钠溶液

题型:单项选择题

支原体肺炎首选药物是

A.红霉素

B.土霉素

C.异烟肼

D.吡哌酸

E.对氨水杨酸

题型:单项选择题

香水中含有什么物质对人体的皮肤有害()

A.铁

B.锌

C.硅

D.铜

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