【单选题】“沟—渠—路”型式如图,道路布置在灌水田块的上端,位于斗渠一侧。这种布置形式缺点是()
B.
当前可修较窄的道路,随着农业机械化程度提高,道路拓宽比较容易;
C.
机耕道要跨过所有的农渠,必须修建较多的小桥或涵管;
【单选题】Recent research has the cause of the disease.
【单选题】“路—沟—渠” 型式如图,道路布置在灌水田块的下端,位于排水沟的上侧。这种布置形式优点如下(D)。
A.
道路要与农渠相交,需要修建桥涵等交叉 建筑物,若交叉建筑物过少或孔径不足,则影响排水;
【单选题】听力原文: Recent research has claimed that an excess of positive ions in the air can have an ill-effect on people's physical or psychological health. What are positive ions? Well, the air is full of ions,...
A.
They are becoming insane.
B.
They feel rather bad-tempered.
C.
They become violently aggressive.
D.
They are suffering toothache.
【简答题】通过查阅资料,列举与人类生活密切相关的一元饱和脂肪酸、一元不饱和脂肪酸、芳香酸、二元羧酸、多元羧酸各一种,并简单阐明它们在人们日常生活中的用途。
【单选题】Recent research has thrown new light the cause of the disease. [ ]
【单选题】世界卫生组织推荐的人类食用油脂肪酸标准为: 饱和脂肪酸∶单不饱和脂肪酸∶多不饱和脂肪酸=1∶1∶1(物质的量之比),下列选项中按饱和脂肪酸、单不饱和脂肪酸、多不饱和脂肪酸顺序排列的是( ) ①C 17 H 35 COOH;②C 17 H 33 COOH;③C 15 H 31 COOH;④C 17 H 31 COOH;⑤C 17 H 29 COOH
【单选题】临床疑有DIC,应选择的筛选试验是:
C.
血小板计数、凝血酶原试验、活化部分凝血酶原试验
D.
血小板计数、凝血酶原试验、活化部分凝血活酶时间、纤维蛋白原
【单选题】临床疑有DIC,应选择的筛选试验是
C.
血小板计数、凝血酶原时间、活化部分凝血活酶时间
D.
血小板计数、凝血酶原时间、活化部分凝血活酶时间、纤维蛋白原
【简答题】A wave of recent research has pointed to the risks of over praising a child. And it seems that how to draw a line between too little praise and too much has become a high-pressure _ _ act for parents....