皮皮学，免费搜题
登录
搜题
【单选题】
在标准状况下，1体积的水溶解700体积的氨气，所得溶液的密度为0.9 g·cm -3 。则该溶液的物质的量浓度为（水的密度为1 g·cm -3 ）( )A.
18.4 mol·L -1
B.
20.4 mol·L -1
C.
31.25 mol·L -1
D.
33.1 mol·L -1
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】______is known to us all, only the theory ______ on practice can be practical.
A.
Which; base
B.
Which; based
C.
As; based
D.
As; basing
【单选题】美国沃尔玛连锁超市将尿布和啤酒摆在一起销售,致使尿布和啤酒销量双增,是因为美国妇女们经常会嘱咐她们的丈夫下班后要为孩子买尿布,而丈夫买完尿布后会顺手买回自己喜爱喝的啤酒,此种营销方式属于( )
A.
整合营销
B.
客户关系型营销
C.
服务营销
D.
关系营销
【单选题】Less sleep can gain us weight, because it raises our leptin, which triggers us to eat more.
A.
Y
B.
N
C.
NG
【单选题】Which of the following is not talked in the passage as which can help us communicate?
A.
books and magazines
B.
TV and films
C.
newspapers
D.
radio
【单选题】Any friction fit, tightness or adhesion of the part of any load being lifted should be broken by wedge or tapping and not by increasing the load on the applianceAccording to this sentence, .
A.
the lifting appliance can always lift the freight within its rated load
B.
attention should be paid in order not to break the wedge when lifting cargo
C.
sometimes the lifting work needs other assistance other than the lifting appliance
D.
lifting work should be done with every part fit, tightness or adhesion
相关题目：