【判断题】缸套装入气缸体时,一般缸套顶面应略低于气缸体上平面0.10mm
【单选题】甲说当缸套装入气缸体时,一般缸套顶面应略低于气缸体上平面0.10mm;乙说活塞环有三隙,分别是开口间隙隙、背隙和侧隙。
【单选题】下列物质中( )是晶体。I.松香;II.玻璃;III.冰;IV.食盐;V.液态金属;VI.固态金属。
【判断题】缸套装入气缸体时,一般缸套顶面应略低于气缸体上平面0.10mm
【判断题】The sounds of /t/ and /d/ are formed by blocking the airstream with the tongue and the upper gum ridge (上齿龈), building up air pressure and suddenly releasing it.
【单选题】If a one-tailed test for a proportion is being performed and the upper critical value is +2.33 and the test statistic is equal to +1.37, then ( )
A.
the null hypothesis should not be rejected.
B.
the alternative hypothesis cannot be rejected.
C.
the null hypothesis should be rejected.
D.
the sample size should be decreased.
【单选题】When the obstruction of the air stream is created between the tip of the tongue and the upper teeth, the sounds thus produced are ________.
【单选题】_____ and the upper wing skin make the vent channels.
【单选题】凯利的归因协变原则认为,如果区别性程度很高,那么该行为主体会把行为做( )。
【单选题】大诗人 不但精通诗词,又精于造园,他一生曾设计营造了四处园林——长安新昌坊宅园、渭水之滨别墅园、庐山草堂、洛阳履道坊宅园。