【单选题】下极限尺寸减去其公称尺寸所得的代数差为 ()
【单选题】下极限尺寸减去其公称尺寸所得的代数差为 。
【单选题】No matter how bright a talker you are, there are times when it’s better ______ silent.
【单选题】______ bright a talker you are, there are time when it’s better to remain silent.
【单选题】Why is the book Silent Spring important to America' s environmental protection?
A.
It describes a silent spring.
B.
It topped the book sales lists.
C.
It changed how American thought about nature.
D.
It includes all Carson's research achievements.
【单选题】下极限尺寸减去其公称尺寸所得的代数差为( )。
【单选题】It's important for students to employ a word or a phrase according to the _____ in the language we study. [ ]
【单选题】The doctor came out of the patient's room with a ______ look on his face.