搜题请搜索小程序“爱下问搜题”
问题 单项选择题

汽车行驶中，发动机的有效功率经传动系传至驱动轮，在动力传递过程中，有一部分功率消耗于克服传动系各部件的摩擦。传动系的机械效率一般为（）。

A、55%～65%

B、65%～75%

C、75%～85%

D、85%～92%

答案

参考答案：D

听力题

66. We have to get the job done ____________(秘密地). We don't want others to know about it.

67. My train was 20 minutes late in the morning and there was a ___________(相似的)delay in the evening. 

68.Miss Li speaks English with excellent _______________(语音). 

69. This company is one of the Post Office's biggest _____________(顾客.客户).

70. The drowning swimmer required the lifeguard's _______________(即刻的)attention.

71. Our victory was ________________(庆祝) with music and dancing.

72. I've never seen a Shakespeare's play ______________(表演) so wonderfully.

73. Nowadays most people use paper _________________(手帕) .

74. The boy spoke in a very low voice , ___________(承认) he had broken the glass.

75.The_______________(大多数)of people in my neighborhood are Italian.
查看答案
多项选择题 案例分析题

初产妇，29岁，G2P0，孕35周。既往曾孕24周因脊柱裂胎儿而行引产一次。此次妊娠妊娠早期经过顺利，妊娠32周发现羊水偏多，胎儿大于妊娠周数，未见明显畸形。

提示：孕38周，剖宫产终止妊娠，分娩一重3900g婴儿。 新生儿处理措施不包括（）

A.预防新生儿低血糖

B.新生儿预防性应用抗生素

C.早期发现RDS

D.急查新生儿血糖

E.新生儿神经系统畸形检查

F.新生儿应用胰岛素
查看答案