In<br/>terms of bioavailability, the following statements are true() A: The<br/>amount of a drug absorbed into the bloodstream B: The<br/>total amount of drug in the body at peak concentration C: The<br/>total amount of drug in the body at a steady-state concentration D: The<br/>amount and rate at which a drug is absorbed into the systemic<br/>circulation E: The<br/>amount of drug that passes through the gastrointestinal tract into<br/>the hepatic portal vein

The<br/>advantage of process concentration:() A: help<br/>ensure the accuracy of one surface position in relation to other<br/>surfaces B: reduce<br/>the number of machine tools and the space they occupy C: reduce<br/>the clamp times D: skill<br/>level of operators can be very low

Concentration<br/>of production is appropriate when______ A: the<br/>product's value-to-weight ratio is low B: volatility<br/>in important exchange rates is expected C: the<br/>product does not serve universal needs D: the<br/>product serves universal needs

The concentration of potassium ions in the cell ( ) is the concentration outside the cell, while the concentration of sodium ions in the cell ( ) is the concentration outside the cell. A: Greater than B: Bigger than smaller than C: Less than D: Less than, greater than

‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬给出如下代码‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬<br/>s<br/>= 'Python is Open Source!'<br/>print(s&#91;0:&#93;.upper())<br/>上述代码的输出结果是 A: PYTHON IS<br/>OPEN SOURCE! B: PYTHON C: Python is<br/>Open Source! D: PYTHON IS<br/>OPEN SOURCE