Mercury freezes if it is cooled to＿. A: a too low temperature B: too low temperature C: a low too temperature D: too low a temperature

The champion boxer fought bravely to defend his title, but was finally by a knockout blow. A: laid low B: lay low C: lie low D: lying low

digitalRead(KEY)==LOW语句中lOW表示（ ）。

The aphotic zone (bottom of the ocean) will have ____ and ____ while the photic zone (surface of the ocean) will have ____ and ____. A: low temperature, low salinity; high temperature, high salinity B: low temperature, high salinity; high temperature, low salinity C: high temperature, high salinity; low temperature, low salinity D: high temperature, low salinity; low temperature, high salinity E: both have equal temperature and salinity

ENUM类型的字段level定义为（LOW、MIDDLE、HIGH），ORDER BY level asc的顺序是 A: HIGH、LOW、MIDDLE B: LOW、MIDDLE、HIGH C: MIDDLE、LOW、HIGH D: HIGH、MIDDLE、LOW

Many consumers believe that low fat mean low calorie.

( ) 6. There must be a time in every man's life ______. A: that he is in low spirits B: which he is in low spirits C: when he is in low spirits D: then he is in low spirits

The output of a OR gate is LOW only when all its inputs are LOW

Air tends to flow from a _______ pressure area to a _______ pressure. A: high, lower B: low, higher C: high, high D: low, low

________ were characteristic of the UK economy in relation to other developed economies. A: Low rates of industrial investment B: Low rates of scientific experiment C: Low rates of educational investment D: Low rates of military expenditure