已知反应KClO3+ 6HCl ＝ KCl + 3Cl2↑+ 3H2O，若用K3

M型超声心动图的二尖瓣水平波群可观察哪种结构的运动曲线

A．主动脉瓣曲线

B． * * 肌曲线

C．主动脉根部曲线

D．肺动脉瓣曲线

E．二尖瓣前叶、后叶曲线

People often wonder why they have spend so much money at the supermarket, and often on things they didn’t intend to buy in the first place. A recent survey indicates that 75% of all grocery shoppers make at least one impulse buying. They may be attracted by eye-catching display, or colorful package. For those shoppers, there is a simple way of avoiding impulse buying, and saving money on groceries. That is, they should make a shopping list beforehand, and stick to it.

取得粮食晾晒预期效果的关键在于选择天气与薄摊勤翻。

11岁男孩，下腹痛半天，呕吐3次入院。体检：体温39．5℃，神清、神萎、颈软，左侧阴囊4cm×3cm，局部红，有明显压痛，克氏征、布氏征均阴性。2周前患有流行性腮腺炎。

11岁男孩最可能的诊断是（）

A.急性睾丸扭转

B.左侧腹股沟斜疝

C.左侧鞘膜积液

D.腮腺炎病毒所致睾丸炎

E.化脓性睾丸炎

制氢室和机组的供氢站应采用（）型电气装置。并采用木制门窗，门应（）开，室外还应装防雷装置。