【判断题】The sentence You must submit your application by Friday is a more effective business message than Please submit your application by Friday.
【单选题】第30题:下列关于等离子弧焊接和切割防灰尘与烟气的措施说法错误的是()。
A.
等离子弧焊接和切割过程中伴随有大量的金属蒸汽、臭氧、氮化物等
【单选题】Negotiation between businesspeople from various countries is in fact
A.
an activity of reading the implications of cultures.
B.
an activity of understanding the styles.
C.
to convey cultural implications.
D.
to put across the cultural intentions.
【单选题】下列关于自然循环系统管道安装错误的是()
A.
为减少循环水头损失,应尽力缩短上、下循环管道的长度和减少弯头数量,应采用大于8倍曲率半径、内壁光滑的弯头和顺流三通
C.
在设置几台集热器时,集热器可以并联、串联或混联,循环管路应对称安装,各回路的循环水头损失平衡
D.
循环管路(包括上下集管)安装应有不小于1%的坡度,以便于排气。管路最高点应设通气管或自动排气阀
【简答题】平衡膳食宝塔共分( )层。 A、3 B、4 C、5 D、6
【单选题】(2016真题-实110)患儿女,10个月,足月产,反复腹泻一个月余,每天5~6次,时稀时稠。生后混合喂养,未添加辅食。査体神清表情呆滞,体重4.8kg,腹软、腹壁脂肪消失关于该患儿的补液原则,正确的是