【单选题】下列关于疝的描述,正确的是?
A.
初发新疝孔,由于刚刚发生,肌纤维断裂后收缩,疝孔变厚。
B.
陈旧性疝孔,由于发生较久,肌纤维断裂后未再生,导致疝孔边缘变薄。
【单选题】What does the passage mainly discuss?
A.
Characteristics of soil quality.
B.
Particles typically found in soil.
C.
The importance of soil texture.
D.
How to determine soil texture.
【单选题】在控制系统中,把执行机构可近似地看成是_____环节。
【单选题】What is most likely to happen to rainwater when it falls on sandy soil?
A.
It sinks in slowly, days later the soil is still saturted.
B.
It sinks in quickly, a few hours later the soil is almost dry.
C.
It runs off the surface and does not enter the soil.
D.
It cracks the surface of the soil.
【单选题】An engineer has designed _______ robot that can work in _______ deep sea to clean waste.
【单选题】采用微柱色谱法检查黄曲霉毒素,所测结果为
【判断题】( ) 摩洛哥人酷爱饮茶,加白糖的红茶是摩洛哥人社交活动中必备的饮料。
【单选题】Permission is kindly ______ about 1000 tons of clean sea water ballast,as and when required for trimming purposes.
C.
requesting to pump out
D.
requesting pumping out