凡是用于船舶制造的钢材,必须向取得()认可资格的制造厂订购。
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Movement of the diaphragm or bellows is () by a linkage to a needle or pointer display to indicate the differential pressure between two sides of the diaphragm or bellows.
A. measured
B. recorded
C. transferred
D. controlled
测定肾功能的重要指标有()。
A. 一次尿量
B. 24小时尿量
C. 肾小球滤过率