第35题: [单项选择]腹围测量一般用于孕几周,可以补充双顶径不足() A. 9~12周 B. 12~16周 C. 16~20周 D. 28~32周 E. 36~42周 参考答案:E 答案解析:腹围是晚期妊娠评价胎儿发育的最佳指标,一般用于孕36~42周,可以补充双顶径不足。
第36题: [单项选择]When a ship is entering to shallow water, ship resistance will be increased and the speed of main engine reduced.Due to the function of the governor, the main engine will() A. reduce fuel feeding B. increase fuel feeding C. keep original fuel feeding D. be overspeed 参考答案:B